I was fishing for brown trout with a fly.

我正在用一只苍蝇钓褐鳟。

So two weeks ago I stood in the severely depleted River Lathkill in Derbyshire assisting with a brown-trout rescue mission as horizontal rain belted us for seven hours.

因此两周前我因为协助一项褐鳟鱼救助任务而站在德比郡那条严重枯竭的Lathkill河流时，我们遇到了持续7小时的暴雨。