N-density
[计] N稠密性
🧩 词语组成解析
🗣️ 情景例句
Have a good trip.
旅途愉快。
He might have been held up in a traffic jam.
他可能因交通阻塞而耽搁了。
easily obtainable from the lunar rocks in the form of liquid oxygen.
从月球上的岩石中很容易提炼出液态氧，