看它的红嘴就可以辨认出是雄的。

The male is distinguished by its red beak.

youdao

那里满是雄雄燃烧的煤块。

It was covered with hot glowing coals.

youdao

不，大的螃蟹是雄的。

No. The larger crab is a male.

youdao

I want to end this premise idea by talking a little bit about a person for whom, one of the chief purpose in life was to spread happiness-- Mahatma Gandhi. This is a story about him.

我想以介绍一位,一生致力于，传播快乐的人来结论这个前提-,圣雄甘地，这是关于他的一个故事。

哈佛公开课 - 幸福课课程节选