Nuclear nitrogen
[化] 环中的氮
🧩 词语组成解析
🗣️ 情景例句
Thanks, Grandpa. Please sit down.
谢谢你， 爷爷。请坐。
How can it be so small and heavy?
这样小何以这么重呀？
When my husband was going into the dining room this morning, he dropped some coins on the floor.
今天早晨我丈夫走进饭厅时，把一些硬币掉在地上了。