external反义词为internal

例句

1、

The techniques of internal management will assuredly change.

毫无疑问，内部的管理技术也会改变。

2、

The medicine is not for internal use.

这种药不可内服。

3、

A combination of internal and external factors caused the company to close down.

内外因结合导致了公司的倒闭。