Perchlormethylformate
[医] 双光气, 聚光气(毒气之一种)
🗣️ 情景例句
Morning, Marilyn.
早安， Marilyn。
I'll have studied English for four years next March.
到明年三月，我就学了四年的英语了。[将来完成时，表示将完成…，会做完…]
In much of China, spring is usually very short.
在中国的许多地方，春天通常很短。