布尔表达式的设计意图就是表达运行时值为表达式时值意图真或假的属性，在某个时刻判断此属性的值就可以决定执时刻可以决定行是否继续。

Boolean expressions are intended precisely to express background contract express runtime true or false properties-properties that at any point in the execution may hold or not hold.

youdao

我可真敬佩你在会上大胆执言。

I sure want to give you props for speaking up at the meeting.

youdao

我可真敬佩你在会上大胆执言。

I sure want to give you props for speaking up at the meeting.

youdao