Perchlormethylformate
[医] 双光气, 聚光气(毒气之一种)
🗣️ 情景例句
You're a big boy.
你是个大孩子了。
I had a shot of penicillin.
我打了一针青霉素。
Education, with its cycles of instruction so carefully worked out,
教育，以其教学周期如此精心地安排，