Tetranitrocompound
四硝基化合物
🗣️ 情景例句
Keep right.
保持右方向。
If not, our repairman can come to you.
要不然，我们的维修人员可以上你那里去。
He added that a student had dressed up as a policeman and was playing all sorts of silly jokes on people.
还对工人说，有个学生常装扮成警察无聊地同别人开玩笑。