There are many trouts inside this lake .

这湖里有许多鳟鱼。

Trouts are alien to our country .

我国不产鳟鱼。

I caught three trouts here yesterday in about an hour .

昨天我在这里一个小时左右就钓到三条鳟鱼。

You know , l used to wonder how come you never brought any trouts home .

知道吗，我常纳闷为什么不见你带鲑鱼回来。