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05 6




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████    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：4,000 ]
[本次分析采用基础词汇量：5,000 ]

Size counts for everything
in these battles

The new arrival is in urgent need of a pit
and since she weighs a hefty 7 kilos,

she stands a good chance
of getting one

She's won

These battles continue for the
next two months and they're crucial,

for the females must
have both shelter

and warm water if they're
to raise their young

For the last seven months, each of
these females has been carrying

around about twenty thousand
fertilised eggs

But their task is approaching
its end

The warmth of the shallows is
speeding the eggs' development

Two more months and the eggs
are ready to hatch

At first, they're not
very good at swimming

But within a few minutes the babies
are able to set off in a purposeful way

At this time of year the sea
is full of larval animals

- this one is a 1 day old lobster

And this ... a 3 week old crab, just
ready to start its life on the sea floor

lts feet touch the bottom for the first time

At this stage in its life it's a
vegetarian, with a taste for sea lettuce

As it grows, so it will repeatedly
moult and expand into a bigger, thicker skin

The chances are it will be eaten,
but if it survives for five years

it will have become a magnificent
armoured giant

Now it eats meat and special adaptations
enable it to hunt in the dark

lts jointed feet are
covered in sensors,

which detect the slightest chemical
change in its surroundings

And as it walks through the darkness
its feet can, literally taste the sand

As soon as it finds suitable food,

it passes it forward to its
powerful crushing claws,

which make light work of
the soft flesh

And those claws are also
very useful for defence

A one and half metre long
common octopus glides by

The jet propelled giant is
both powerful and very clever

With octopus about, it's risky for
even a crab to be in the open

Even in the dark, the octopus's eyes
are sensitive to the slightest movement

Against a hunter like this,
the crab's claws are useless

Late summer in South East Alaska

The water is still warming and mysid
shrimp are swarming near the surface

lt's a final feast for Pacific salmon,

returning to the coast from
the open Pacific

They are heading inshore to breed
and they arrive in huge numbers

They have to swim far up
the rivers to spawn,

but this river's level
is still too low

- they'll have to wait
until rain causes it to rise

So, for now they are trapped
in the sea,

close to the shore,
the worst place to be

A three metre long salmon shark,
a close relation of the great white

This one has sensed minute electrical
signals from the salmon nearby


知识点

重点词汇
crab [kræb] n. 螃蟹；蟹肉；脾气乖戾的人；起重机 vt. 抱怨；破坏；使偏航 vi. 捕蟹；发牢骚；抱怨 {cet6 ky toefl gre :5100}

adaptations [ædæp'teɪʃnz] n. 适应；改编（adaptation的复数） { :5196}

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}

armoured [ˈɑ:məd] adj. 装甲的；铠装的；蛇皮管的 { :6061}

lobster [ˈlɒbstə(r)] n. 龙虾 龙虾肉 {toefl :6212}

spawn [spɔ:n] n. 卵；菌丝；产物 vt. 产卵；酿成，造成；大量生产 vi. 产卵；大量生产 {toefl gre :6476}

lettuce [ˈletɪs] n. [园艺] 生菜；莴苣；（美）纸币 {toefl :6589}

propelled [prə'peld] v. 推动；驱使（propel的过去分词） adj. 推进的 { :6618}

claws [klɔ:z] n. 爪子（claw的复数） v. （用爪或钳）抓（claw的第三人称单数形式） { :6934}

glides [ɡlaidz] n. 滑行( glide的名词复数 ); 滑音; 音渡; 过渡音 v. 滑动( glide的第三人称单数 ); 掠过; （鸟或飞机 ） 滑翔 { :7090}

hatch [hætʃ] n. 孵化；舱口 vt. 孵；策划 vi. 孵化 n. (Hatch)人名；(西)阿奇；(英)哈奇 {gk cet4 cet6 ky toefl ielts gre :7365}

hefty [ˈhefti] n. 体格健壮的人 adj. 重的；肌肉发达的；异常大的 adv. 强有力地；非常 n. (Hefty)人名；(英)赫夫蒂；(法)埃夫蒂 { :8480}

swarming ['swɔ:mɪŋ] n. 分群；分蜂 v. 群集；充满（swarm的ing形式） { :8983}

vegetarian [ˌvedʒəˈteəriən] n. 素食者；食草动物 adj. 素食的 {ky toefl ielts :9054}


难点词汇
kilos [kɪ'ləʊs] n. 公斤；千克 { :11522}

purposeful [ˈpɜ:pəsfl] adj. 有目的的；有决心的 { :11688}

Alaska [əˈlæskə] n. 阿拉斯加州 {ielts :12468}

octopus [ˈɒktəpəs] n. 章鱼 章鱼肉 {toefl :15455}

larval ['lɑ:vl] adj. 幼虫的；幼虫状态的；潜在的；隐蔽的 { :19427}

inshore [ˈɪnʃɔ:(r)] adj. 近海岸的；向陆的 adv. 近海岸；向陆 { :19979}

fertilised ['fə:tilaiz] vt. 使受精；施肥于；使肥沃 { :23467}

moult [məʊlt] vi. 脱毛；换毛；蜕皮 vt. 脱毛；换毛 n. 脱毛；换毛 n. (Moult)人名；(英)莫尔特 { :26637}


生僻词
LTS [ ] abbr. lights （供食用的）家畜的肺脏; long-term store 长期存储

mysid ['maɪsɪd] n. 糖虾; 糠虾


词组
a crab [ ] [网络] 螃蟹；无肠公子；疣粒团扇蟹

common octopus [ ] 鱆鱼

glide by [ɡlaid bai] na. (时间等)悄悄过去(溜走)

Pacific salmon [ ] un. 大鳞大麻哈鱼属；太平洋鲑 [网络] 太平洋鲑鱼；太平洋三文鱼；大鳞大马哈鱼

salmon shark [ ] un. 鼠鲨 [网络] 太平洋鼠鲨；鲑鲨；鲑鱼鲨

sea lettuce [si: ˈletis] un. 石莼属 [网络] 海白菜；海莴苣；海洋莴苣

special adaptation [ ] 《英汉医学词典》special adaptation 特殊适应

the shore [ ] [网络] 海岸；海滩；海岸图片

to breed [ ] 配种

to hatch [ ] 孵化

trap in [ ] un. 陷入 [网络] 用…捕捉；使困于；被…困住

urgent need [ˈə:dʒənt ni:d] [网络] 急需；迫切需要；急用



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