但是当这对母女到达时，没有人向他们打招呼，尽管他们的到访是事先计划好的；也没有人把他们介绍给其他居民。

But nobody greeted the daughter and mother when they arrived, though the visit had been planned; nobody introduced them to the other residents.

youdao

在同自己认识的人打过招呼后可以寻找那些过去没见过的人，向对方做自我介绍，然后开始你们的谈话。

After you greet people you know look for people you haven't met before. Introduce yourself and start a conversation.

youdao

仅仅只是走向一个人，打个招呼然后介绍自己。

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

youdao