Keep down! You mustn't let anyone see you.
蹲下！一定不要讓人看見你。
The computer system will be shut down over the weekend.
計算機系統週末關閉。
You must slow down or you'll make yourself ill.
你得鬆鬆勁，不然會累病的`。
Let's get down to business.
咱們開始幹正事吧。
Put the cases down there, please.
請把箱子擱在那邊。
His success was down to being in the right place at the right time.
他的成功之處就在於把握住了時機。