Nitrolamine
硝脑胺
🗣️ 情景例句
I think I know you. Aren't you...?
我觉得我认识你。你是……吗？
One chick keeps a hen busy.
一只小鸡已够母鸡辛忙。
Similarly, our own present primitive chemical rockets, though good enough to orbit men,
同样，我们目前使用的原始化学火箭，虽然可以把人送入轨道，