Perifocal
[医] 病灶周的
🗣️ 情景例句
and I will bring the cola and the plastic cups.
我拿可乐和塑胶杯来。
A man can die but once.
人生只有一次死。
To escape from the Earth in a rocket, one must travel at seven miles per second.
要乘坐一枚火箭飞离地球，火箭的速度要达到每秒7英里，