Nitrofluorene
[化] 硝基芴
🗣️ 情景例句
before getting to the tough stuff--math.
在对付难缠的东西 数学 之前。
Be prepared to put one's hand in one's pocket.
准备慷慨解囊。
Meanwhile, the traffic piled up behind.
与此同时，后面的车辆排成了长龙，