hello

你好、哈啰

She smiled and said hello to everyone in the room.

她笑著跟房间里的每个人打招呼说哈啰。

喂、哈啰接电话时

Hello, is this the customer service department?

喂，请问这里是客服部吗。

喂、有人在吗用于引起注意

Hello? Is anybody still working in here?

喂，里面还有人在工作吗。

拜托、搞什么口语，表示对方没搞清楚

Hello, we agreed on this plan two weeks ago.

拜托，这个计划我们两周前就讲好了。

招呼、问候

He gave me a quick hello and walked straight past.

他随口跟我打了声招呼就径自走过去了。