肃立的英文：
come to attention

参考例句：

Everybody stood as a mark of respect when the national anthem was played.
奏国歌时全场肃立。

Opened the meeting By calling it to order.
会议开始，全体肃立

The ladies only vicariously involved were standing almost at attention as they waited
那些与话题无关而只是代替别人听听的女士们，几乎都在肃立恭听。

come是什么意思：
v. 来；发生；开始；出现；变成；达到；来做；来取；来拿
int. 嗨，得啦，好啦

The bale will be coming.
不幸就要降临了。

Come on get with it!
好啦，时髦点儿吧！

Illness comes in by mouth and comes out by it
病从口入祸从口出

If it be now, ’tis not to come; if it be not to come, it will be now; if it be not now, yet it will come: the readiness is all
注定在今天，就不会是明天;不是明天，就是今天;逃过了今天，明天还是逃不了，随时准备着就是了。

There is every proBability of his coming / that he will come.
他多半会来的。

attention是什么意思：
n. 注意，留心，考虑，关心，修理
int. 立正! 注意!

At ease! Attention!
稍息！立正！

Attention, please!
请注意！

attentiveness n.
恳切；殷勤

The sight arrested my attention.
这景象吸引了我的注意力。

His speech held their attention.
他的讲话使他们集中注意力。