Fhsa
联邦危险物品法案（federal hazardous substances act）
🗣️ 情景例句
If you'd like to hear some new English songs, I suggest you download them from the web.
如果你想听一些新的英文歌，我建议你上网下载。
Come back!
回来！
She is standing in the front of the bus.
她站在公共汽车的前部。