Fhsa
联邦危险物品法案（federal hazardous substances act）
🗣️ 情景例句
Exploring outer space is a challenge to mankind.
探索外层空间是一项向人类发出的挑战。
There aren't any other worms for me to play with. I'm the only worm here.
此地没有和我玩的虫虫。这里只有我一条而已。
What is the minimum we would have to order.
那么我们至少得订多少呢。