I was fishing for brown trout with a fly.

我正在用一只苍蝇钓褐鳟。

youdao

You must lose a fly to catch a trout.

（谚））钓鳟鱼也得蚀只苍蝇[偷鸡也要两粒米； 以小鲭钓大鲭] 。

youdao

You must lose a fly to catch a trout.

（谚））钓鳟鱼也得蚀只苍蝇[偷鸡也要两粒米； 以小鲭钓大鲭] 。

youdao