只要记住说你好的时候带上微笑就行了，另外轻轻招手也会显得很礼貌。

Just remember to smile as you say hello. A small wave is also polite.

youdao

只要记住说你好的时候带上微笑就行了，另外轻轻招手也会显得很礼貌。

Just remember to smile as you say hello. A small wave is also polite.

youdao