如果你存储了字段，但是在查询时根本没有用到它们，那么别存储它们。

Turn off any features you are not in fact using. If you are storing fields but not using them at query time, don't store them.

youdao

当有错误发生时，友好些，并且对客户有用些- - -别告诉客户说“你查询的航班不存在”。

When something goes wrong, be nice, and be helpful-don't tell the user, "I couldn't find any flights for your search".

youdao

别挂断电话，稍等一会儿，我来查询一下这信息。

Hang on a minute! I am going to look up the information.

youdao