Precava
n. [动]前腔静脉
🔁 扩展释义
【医】 上腔静脉
🗣️ 情景例句
I think you'll enjoy it.
我想你们会喜欢的。
Be considerate toward the poor.
应常为穷人着想。
and in the course of a few hundred miles reaches the true ocean floor at 2,500-3,500 fathoms.
一直延伸到几百英里远深达2，500至3，500的地方，