Stand the fish tank on a firm base.
把魚(yú)缸放在牢固的`基座上。
The fish return to the river as adults in order to breed.
這種魚(yú)長(zhǎng)成以后回到河中產(chǎn)卵。
This fish has a lot of bones in it.
這種魚(yú)多刺。
How many fish did you catch?
你捕到幾條魚(yú)？
The eyes of some fish have a greater sensitivity to light than ours do.
有些魚(yú)的眼睛對(duì)光比我們敏感。