Just walk up to someone, say "hi" and introduce yourself.

仅仅只是走向一个人，打个招呼然后介绍自己。

youdao

Hi, Mary, are you all alone by yourself?

嗨，玛丽，就你自己一个人吗？

youdao

Hi, buddy! You are not quite yourself today.

你好，伙计。你今天不大对劲。

youdao

Take care of yourself, and say hi to Joshua for me.

好好照顾你自己，并代我向约书亚问好。

youdao

Take care of yourself, and say hi to Joshua for me.

好好照顾你自己，并代我向约书亚问好。

youdao