Nitrocementation
碳氮共渗
🗣️ 情景例句
Dean Rafer called me today.
Rafer主任今天打电话给我。
He can't dress himself yet because he's too young.
他还不能给他自己穿衣服因为他是太年轻的。
This is a pity, because noise abatement really is a good cause.and it is likely to be discredited if it gets to be associated with bad science.
要求减少噪音确实是件好事，但是如果与拙劣的科学掺杂在一起的话，就不会被人们所信任，这是很遗憾的。