They braced up the old house with balks of timber.
他们用梁木加固旧房子。
brace upThe doctor cautioned him to brace up.
医生告诫他要振奋精神。
brace sb ⇔ upShe braced herself up and tried once more.
她鼓起勇气又试了一次。
You had better brace yourself for some bad news.
有些坏消息,你最好做好准备。
The country is bracing itself for the threatened enemy invasion.
这个国家正准备奋起抵抗敌人的入侵威胁。