Precava
n. [動]前腔靜脈
?? 擴展釋義
【醫】 上腔靜脈
??? 情景例句
Pull yourself together.
振作起來。
I'm receiving guests downstairs.
我在樓下接見客人。
The tent was full of water! They all leapt out of their sleeping bags and hurried outside.
原來帳篷里到處都是水！他們全都跳出睡袋，跑到外面。