原文视听

A flight of fish.
鱼儿凌空飞翔
Escaping predators is not the only test facing the flying fish.
逃离掠食动物 并非飞鱼面对的唯一挑战
They must also protect their developing young.
它们还得保护发育中的幼鱼
These flying fish are searching for the one thing
这些飞鱼正在寻找一样东西
that will make this possible.
好让幼鱼得到保护
In such a vast ocean it's not easy.
在这片汪洋大海这差事可不简单
They're in luck.
它们走运了
A palm frond.
一片棕榈叶
It's a tiny island adrift in a huge ocean.
这是漂浮在 浩瀚汪洋中的一座小岛
And like an island it offers shelter,
如小岛一般提供栖身之所
not for the flying fish, but for their eggs.
收容的不是飞鱼 而是飞鱼卵
The females lay eggs on the raft, where the males fertilise them.
母鱼在叶子上产卵 由公鱼让卵子受精
The first fish spawn and this triggers the others to start.
第一条鱼产卵 触发其他飞鱼跟进
Soon thousands join the melee.
随即有数千条鱼加入这场乱局
Innumerable strands of eggs are laid.
产下数之不尽的一串串鱼卵
The raft starts to tilt under their weight.
压得叶子开始倾斜

重点解释

These flying fish are searching for the one thing这些飞鱼正在寻找一样东西

search for:寻找

The unemployed will search for jobs online.

失业者可以在网上寻找工作。

Many are making it easier to search for content.

许多人正尝试使搜索变得更容易。

They're in luck.它们走运了

in luck:运气好

I am in luck these days and everything goes well.

这些天我运气好，一切都进行得很顺利。

Peter was in luck for he found a good job.

彼得找到了一个好工作，他非常幸运。

相关短语:one's luck is in交好运；走运

His luck is on the turn.

他时来运转了。

He went to Chicago to try his luck in the World's Fair.

他去芝加哥的世界博览会去碰碰运气。

not for the flying fish, but for their eggs.收容的不是飞鱼而是飞鱼卵

not for...but for...:不是……而是…

I adulation you not for who you are, but for who I am afore you.

我爱你不是由于你是谁，而是我在你眼前可以是谁。

They came here not for money but for the life.

他们到这儿来，不是要钱，而是要命。