Skip to content

07 6




文本

████    重点词汇
████    难点词汇
████    生僻词
████    词组 & 惯用语

[学习本文需要基础词汇量：5,000 ]
[本次分析采用基础词汇量：5,000 ]

Safe at last - inside the cave

they are far less exposed
to attack from predators

Thousands of desmoiselles and blue mao mao
wait for the return of the current,

when once again they will
head out into the open to feed

The moon's gravitational pull
is weaker nearer to the earth's equator,

so the more equatorial the location,
the smaller the tides

And out here in the Caribbean Sea
the tidal movements are slight

Even so, they are sufficient to push
free swimming plankton in their path

These are thimble jellyfish

They swim towards the sunlight
and invisible boundaries

formed by the tidal motion
help to herd them together,

until they gather in immense swarms

They put the tropical
sunshine to good use

- their brown colour
comes from algae that

live inside the jellyfish's bodies
and photosynthesise energy from the sun

ln open water they
are fairly safe,

but the tide is sweeping the whole
swarm gently towards the Bahamas,

where hungry mouths are waiting

Although the sea level
does not change much

- the tides are still pushing
an enormous volume of water

from the ocean through the
small gaps between the island cays

Underwater the tidal currents
race past soft corals

And on over the sandy
banks themselves...

lt is an immense area of coral sand
that is only just submerged at high tide

This incoming tide is bringing
in a fresh supply of oceanic plankton

and razorfish gather at the best spots
to catch the pick of the microscopic feast

Although there is plenty here
for these small fish to eat,

gathering in one place makes it
easy for their predators to find them

A nurse shark is little threat

But this sound heralds
a quite different danger

A bottlenose dolphin

lt's using its sonar to locate
razor fish beneath the sand

Once it finds a suitable target
it simply digs out its prey

The buried fish have no defence
against this attack

They will simply have to wait
and hope they aren't found out

This dolphin appears to have a razor
fish craving - well, she is pregnant

Success, at last

The incoming tide sweeps
on towards America,


知识点

重点词汇
herd [hɜ:d] n. 兽群，畜群；放牧人 vt. 放牧；使成群 vi. 成群，聚在一起 n. (Herd)人名；(英、芬)赫德 {cet4 cet6 ky toefl ielts gre :5174}

Caribbean [.kæri'bi:әn] n. 加勒比海 adj. 加勒比人的；加勒比海的；加勒比语的 { :5535}

feast [fi:st] n. 筵席，宴会；节日 vt. 享受；款待，宴请 vi. 享受；参加宴会 {gk cet4 cet6 ky ielts :5626}

coral [ˈkɒrəl] n. 珊瑚；珊瑚虫 adj. 珊瑚的；珊瑚色的 n. (Coral)人名；(英、法、西、葡)科拉尔 {gk toefl :5793}

corals [ˈkɔrəlz] n. 珊瑚( coral的名词复数 ); 珊瑚虫 { :5793}

sandy [ˈsændi] adj. 沙地的；多沙的；含沙的 n. (Sandy)人名；(法、喀、罗、西、英)桑迪(教名Alasdair、Alastair、Alexander、Alister、Elshender的昵称) {cet4 cet6 toefl :6261}

incoming [ˈɪnkʌmɪŋ] n. 进入；到来；常作 incomings 收入，收益 adj. 进来的，到来的； 即将就任的 {ielts :6757}

heralds [ˈherəldz] n. 使者( herald的名词复数 ); 预报者; 预兆; 传令官 v. 预示( herald的第三人称单数 ); 宣布（好或重要） { :7050}

razor [ˈreɪzə(r)] n. 剃刀 vt. 剃，用剃刀刮 {gk cet4 cet6 ky gre :7444}

craving [ˈkreɪvɪŋ] n. 渴望；热望 v. 渴望；恳求（crave的ing形式） {gre :7562}

algae [ˈældʒi:] n. [植] 藻类；[植] 海藻 {toefl :8285}

gravitational [ˌgrævɪˈteɪʃənl] adj. [力] 重力的，[力] 引力的 {toefl gre :8363}

tidal [ˈtaɪdl] adj. 潮汐的；潮的，有关潮水的；定时涨落的 n. (Tidal)人名；(瑞典)蒂达尔 { :8579}

swarms [swɔ:mz] n. 蜂群，一大群( swarm的名词复数 ) v. 密集( swarm的第三人称单数 ); 云集; 成群地移动; 蜜蜂或其他飞行昆虫成群地飞来飞去 { :8983}

swarm [swɔ:m] n. 蜂群；一大群 vi. 挤满；成群浮游；云集 vt. 挤满；爬 {cet4 cet6 ky toefl ielts gre :8983}

underwater [ˌʌndəˈwɔ:tə(r)] n. 水下 adj. 在水中的；水面下的 adv. 在水下 {toefl :9111}

Lt [ ] abbr. 书信电报（letter message）；数据处理（Language Translation） { :9242}

microscopic [ˌmaɪkrəˈskɒpɪk] adj. 微观的；用显微镜可见的 {cet6 toefl gre :9581}

submerged [səb'mɜ:dʒd] adj. 水下的，在水中的 v. 潜入水中（submerge的过去分词）；使陷入 {toefl :11140}

equator [ɪˈkweɪtə(r)] n. 赤道 {cet6 ky toefl ielts gre :12760}

MAO [maj] abbr. 单胺氧化酶（monoamine oxidase） adj. 毛式服装的 n. 毛式服装 n. (Mao)人名；(柬、老)毛；(法)马奥 { :13042}

oceanic [ˌəʊʃiˈænɪk] adj. 海洋的；海洋产出的；在海洋中生活的；广阔无垠的 { :13204}

equatorial [ˌekwəˈtɔ:riəl] n. 赤道仪 adj. 赤道的，近赤道的；中纬线的 { :13650}


难点词汇
sonar [ˈsəʊnɑ:(r)] n. 声纳；声波定位仪（等于asdic） n. (Sonar)人名；(土)索纳尔 { :14879}

Bahamas [bә'hɑ:mәz] n. 巴哈马群岛（拉丁美洲国家） { :15946}

jellyfish [ˈdʒelifɪʃ] n. 水母；[无脊椎] 海蜇；软弱无能的人 {toefl :18731}

plankton [ˈplæŋktən] n. 浮游生物（总称） {ielts gre :19300}

thimble [ˈθɪmbl] n. 顶针；套管；嵌环 { :23923}

cays [ ] (cay 的复数) n. 沙礁, 珊瑚礁, 沙洲 { :25895}

ln [ ] abbr. 自然对数（Napierian Logarithm）；液态氮（Liquid Nitrogen） { :28828}

bottlenose [bɒtli:'nəʊz] n. 宽吻海豚 { :32815}


复习词汇
tide [taɪd] n. 趋势，潮流；潮汐 vt. 随潮漂流 {cet4 cet6 ky toefl ielts :3284}


生僻词
photosynthesise [ ] [网络] 光合作用

razorfish ['reizə,fiʃ] [医]离鳍鱼


词组
at high tide [ ] na. 处于高潮 [网络] 处于高潮中；顶点

bottlenose dolphin [ˈbɔtlnəuz ˈdɔlfin] [网络] 瓶鼻海豚；宽吻海豚；樽鼻海豚

Caribbean Sea [ ] un. 加勒比海 [网络] 加勒比海地区；加勒比海简介；美洲加勒比海

coral sand [ ] un. 珊瑚砂；珊瑚沙 [网络] 珊喊；珊瑚礁；梅德温

earth's equator [ ] 地球赤道

gravitational pull [ ] na. (星球等对另一物体的)引力作用 [网络] 地心引力；万有引力；重力牵引力

high tide [hai taid] n. 满潮 [网络] 高潮；涨潮；高潮时间

nurse shark [nə:s ʃɑ:k] 沙锥齿鲨

oceanic plankton [ ] 远洋浮游生物

razor fish [ˈreizə fiʃ] 竹蛏

soft coral [ ] [网络] 软珊瑚区；软体珊瑚；帛琉软珊瑚区

the Bahamas [ ] [网络] 巴哈马群岛；巴哈马国；巴哈马联邦

the caribbean [ ] [网络] 加勒比海；加勒比海地区；加勒比地区

the tide [ðə taid] [网络] 潮水；潮汐；潮来潮往

tidal current [ ] na. 潮流 [网络] 潮汐流；潮流海流；本局有无潮流

tidal currents [ ] n. 潮流 [网络] 潮汐流

tidal motion [ ] 潮汐运动

tidal movement [ ] 潮流运动



单词释义末尾数字为词频顺序
 zk/中考 gk/中考 ky/考研 cet4/四级 cet6/六级 ielts/雅思 toefl/托福 gre/GRE
* 词汇量测试建议用 testyourvocab.com