No matter what happens, my brother always loses his head.

◆lose one's head
字面词义：脑袋丢了。
真正含义：情绪激动；失去自制；惊慌失措。

◆句子翻译
无论发生什么事情，我的弟弟都显得惊慌失措。

1、No matter what happens, we don't lose our heads!
无论发生什么事情，我们都要镇定！
2、Don't lose your head, keep calm!
别惊慌失措的，沉住气！
3、Calm down; just because you’ve got the first five answers wrong, there is no need to lose your head.
冷静，你只不过是答错了前5道题，没必要样慌张。
4、Be sober-minded. Don't lose your head.
清醒一点，不要头脑发昏。

5、When he heard that his son had an accident, he lost his head.
当他听到自己的儿子出了意外，他失去了理智。
6、He completely lost his head after the stock market crashed.
股票市场崩盘后他完全失去理智。
7、When the fire broke out in the movie theater, the people lost their heads and ran in all directions.
电影院起火的时候，大家失去理智而向四方奔逃。
8、He seems to lose his head when he talks to Ponpon.
他跟澎澎讲话的时候好像很惊慌失措。