prim humourless be poker-faced in all seriousness become serious
Why were grown-ups always so stuffy and slow to recognize good ideas?
为什么成年人总是那么一本正经,对好点子反应那么迟缓呢?
—— 柯林斯例句He grandly declared that "international politics is a struggle for power".
他一本正经地宣称“国际政治是一场权力之争”。
—— 柯林斯例句In a pinstriped suit he instantly looked like a stuffed shirt.
穿上一套细条纹西装后,他马上就显得一本正经起来。
—— 柯林斯例句He was a serious, silent man.
他是个一本正经、寡言少语的人。
—— 柯林斯例句He showed his teeth in a humourless grin.
他一本正经地咧嘴笑了笑。
—— 柯林斯例句