fish可數還是不可數的由來

You need a licence to fish in this river.

你在這條河裏釣魚要有許可證。

We enjoyed a day's fishing by the river.

我們在河邊享受了一天垂釣之樂。

In the wild, this fish can reach a weight of 5lbs.

這種魚在自然生存環境中可以長到5磅重。

Stand the fish tank on a firm base.

把魚缸放在牢固的基座上。

The fish return to the river as adults in order to breed.

這種魚長成以後回到河中產卵。