Oxygencontent
[化] 含氧量
🗣️ 情景例句
I beg your pardon? Oh, I see.
你说什么？ 噢， 我明白了。
Many a good father hath but a bad son.
好父亲偏生不肖子。
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。