Nitropentaerythrol
四硝季戊四醇
🗣️ 情景例句
It's six o'clock.
已经六点了。
What time does the plane take off?
飞机何时起飞呢？
Yet all these things, different as they seem, have one thing in common.
然而所有这些东西，看上去虽不同，但却有一个共同点。