03 3
文本
████ 重点词汇
████ 难点词汇
████ 词组 & 惯用语
[学习本文需要基础词汇量：
[本次分析采用基础词汇量：
The surviving ,
however,
have already started on their travels.
Vast current systems,
like immense rivers,
carry them around the .
The boundaries between
these masses of moving water...
form invisible barriers that can trap
both and nutrients carried up
from the depths.
So parts of the ocean become rich
with food for days or even weeks at a time
This attracts vast schools of
plankton-feeding fish - like these
They take in water through their mouths
and it through their
the which
is then down their throats.
The immense schools travel along
the boundaries of the currents
- seeking the spots where
the is thickest.
As the position of the current
boundaries changes constantly,
so does both the supply of
and the numbers of fish.
A small of Pacific Spotted Dolphin
- twenty miles from the coast of .
Like all predators,
they seek parts of the ocean
where their food is thickest.
They cover
as much as hundred miles in a day.
And while they travel, they play.
They have detected the sound of
schooling fish from hundreds of metres away
and start to track down
the using
- leaving their toys behind them.
For the hunted
there are few places to hide.
.
They have already sensed the beams
of approaching dolphin.
Their only defence
is to gather into a ball.
Any individual that stayed out
of the would be quickly picked off.
Within it,
there is at least some chance of survival.
The noise of the attack
alerts another predator
- a , one of the
fastest fish in the ocean.
has detected rapid
in the water
and is searching for the cause.
rely on
for their final approach
so they hunt mainly .
When become excited
they change colour
lighting up with bright blue .
Since eyes
are especially sensitive
to blue and ,
these colours confuse them
- making them easier to catch.
Far below, a returns
from a squid-hunting trip in the
cold darkness three hundred metres down.
lt's heading for the surface to
in the warmer water.
As it ,
it detects the smell of oils
知识点
重点词汇
daylight [ˈdeɪlaɪt] n. 白天；日光；黎明；公开 {gk cet4 ky :5270}
expel [ɪkˈspel] vt. 驱逐；开除 {cet4 cet6 ky toefl ielts gre :5990}
stripes [st'raɪps] n. 条子布；条纹布（stripe复数形式） v. 给…加条纹（stripe的三单形式） { :6292}
vibrations ['vaɪbreɪʃənz] n. [力] 振动；共鸣；动摇（vibration的复数） { :6691}
gills [gɪls] n. （鱼等的）鳃( gill的名词复数 ); 深谷; （人的）腮下肉; 菌褶 { :7313}
Panama [.pænә'mɑ:] n. 巴拿马（位于拉丁美洲）；巴拿马城 { :8319}
pod [pɒd] n. 蚕茧；豆荚 n. (Pod)人名；(罗)波德 vt. 从豆荚中剥出 vi. 结豆荚 {gre :8381}
Lt [ ] abbr. 书信电报（letter message）；数据处理（Language Translation） { :9242}
ascends [əˈsendz] v. 上升，攀登( ascend的第三人称单数 ) { :9518}
ultraviolet [ˌʌltrəˈvaɪələt] adj. 紫外的；紫外线的 n. 紫外线辐射，紫外光 {cet6 ky toefl ielts :9521}
funnelled ['fʌnld] adj. 漏斗状的 v. 倾销( funnel的过去式和过去分词 ) { :10793}
难点词汇
shoals [ʃəʊlz] n. [地理] 浅滩（shoal的复数形式）；[水文] 沙洲 v. 变浅；使驶进浅水区（shoal的第三人称单数） n. (Shoals)人名；(英)肖尔斯 { :12753}
shoal [ʃəʊl] n. 浅滩，沙洲；鱼群；潜在危险 vi. 变浅 vt. 使变浅；驶入 adj. 浅的 {ielts gre :12753}
eyesight [ˈaɪsaɪt] n. 视力；目力 {gk cet4 cet6 ky ielts :13749}
sonar [ˈsəʊnɑ:(r)] n. 声纳；声波定位仪（等于asdic） n. (Sonar)人名；(土)索纳尔 { :14879}
sardine [ˌsɑ:ˈdi:n] n. 沙丁鱼；庸碌无能的人 vt. 使拥挤不堪 {cet6 :15458}
sieving ['sɪvɪŋ] n. 筛分；筛选 { :15525}
mackerel [ˈmækrəl] n. 鲭（产于北大西洋）；马鲛鱼 { :15554}
reheat [ˌri:ˈhi:t] n. 再热（炉） vt. 再热；将…重新加热 { :15756}
plankton [ˈplæŋktən] n. 浮游生物（总称） {ielts gre :19300}
hatchlings [ ] (hatchling 的复数) n.人工孵化的鱼苗或小鸟 { :26157}
sailfish ['seɪlfɪʃ] n. 旗鱼 { :27080}
词组
blue shark [ ] 苇切鲨; 大青鲨
in daylight [ ] [网络] 光天化日之下；在阳光中
ocean basin [ ] un. 海洋盆地；海盆；海洋水域 [网络] 大洋盆地；洋底盆地；海底盆地
school mackerel [ ] 昆士兰马鲛鱼
sieve out [ ] 过滤出
spotted dolphin [ ] [网络] 斑海豚；点斑原海豚；热带斑海豚
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