lose one’s cool (lú sī wān' sī kù ěr)

Idiom Anger

含义

to suddenly become angry

突然生气 (tūrán shēngqì)

例句

"Try not to lose your cool during the argument."

"尽量在争论中保持冷静。" (jǐnliàng zài zhēnglùn zhōng bǎochí lěngjìng)