翻译：我们一旦出门

我们一旦出门，便会遇到语言方面的障碍，不能与人交流，更不能与人沟通。
Once we g out ,we will meet problems on lanuages for can't talk with others as well as comminicate with others

We will encounter linguistic barriers while we are abroad, can not speak with people, let alone communication.

we cannot speak with other people

alexaxis one is correct but just make sure you add that one in as well..

Once we are abroad,we will encounter linguistic barriers,we can not speak foreign language with people neither communicate with them.