Fhsas
(FHSA 的复数) 联邦危险物品法案（federal hazardous substances act）
🗣️ 情景例句
People don't ask unmarried people Why are you single?.
人们不会问未婚的人“你为什么不结婚？”。
I ask him to stay at home.
我要求他待在家里。
Now, this is the chemistry lab. Have you been in this lab before?
好啦，这是化学实验室。你们以前到过这个实验室吗？