1.calm down 平靜下來,鎮靜下來
例句:You'd better calm down and level your voice when you give a speech.
演講時你最好鎮定下來并放平聲調 。
2.call for 需求,需要,提倡
例句:Those who care about it most will be among the first to call for its renewal and reform.
最關心聯合國的人將是那些率先要求加強其活力和對它進行改革的人 。