他们不擅长唱歌。

They are not good at singing.

她真的很擅长唱歌。

She is rly good at singing.

我擅长唱歌，也会弹吉他。

I'm good at singing and I can play the guitar, too.

就是指非常擅长唱歌和跳舞。

It means to be skilled at singing and dancing.

我不擅长唱歌。我们一起唱好吗？

Why don't you sing a song?

太太擅长唱歌，先生则擅长做其他的事，于是他们每星期出去兼差赚一些外快。

She was good at singing, and he was good at doing some other thing. So they would go out to work and bring in extra income every week.

虽然不太擅长唱歌和跳舞，但我还是乐在其中。

I really love singing and dancing, although I am not that good at it.