up on

up on

熟悉, 精通

例句与用法：

The parents were up in arms about the closing of the school.

家长们对关闭这所学校表示了极大的不满。

As soon as we asked them money, they were up in arms.

我们刚开口向他们要钱，他们就发了火。

All of the colonies are up in arms against him.

所有的殖民地均奋起与他作斗争。

The whole village is up in arms about the proposal to build an airport nearby.

全村强烈反对在附近修建机场的计划。

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ph.

熟悉; 精通