Dinitrofluorobene
二硝基氟苯
🗣️ 情景例句
Did it spoil your fun?
会不会让你扫兴？
If he doesn't stay, who will?
如果他不，谁要留下？
It's often cold in December, January and February.It snows sometimes.
12月、1月和2月常常很冷，有时还下雪。