Coronizing
扩散镀锌; 高温处理
🗣️ 情景例句
It's my fault. I really feel bad about it.
是我的错。 我真的感到很难过。
I doubt he'll win the election.
我怀疑他是否能赢得选举。
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，