Early sailors called belugas " sea canaries" .

早期的水手们称白鲸为“海洋高音”。

It's why they sent the canaries down first to check the air.

这也就是为什么他们先派金丝雀去检查空气。

After treatment, both groups of canaries began singing.

注射完成后，两组金丝雀都开始一展歌喉。

If the canaries died, the miners knew the air was not healthy.

如果金丝雀死了，矿工就知道里面的空气不健康。

You can even train a young canary to sing.

你甚至可以教一只幼小的金丝雀唱歌。

" What, and get attacked by another flock of canaries? " muttered Ron.

“什么？再让一群小鸟来啄我？”罗恩嘟囔道。

Some of these canaries received doses of testosterone to the POM only.

其中一些只在POM区域被注射一定量的激素。

Ten-second trivia: Which of these animals is nicknamed the canary of the sea?

下面哪种动物被戏称为海中的金丝雀？

" You look like a cat that's swallowed a canary, " I could not help snapping.

" 你活像一只吞了金丝雀的猫，" 我禁不住怒气冲冲地说。

Why does English use canaries in this expression?

为什么英语里的这个表达要用到金丝雀这个词呢？