Nitrogenizing
vt. 使含氮；使氮化
🗣️ 情景例句
The trouble is
问题是
To run a race
竞争
It was used for keeping tea hot after it was made,said Wei Hua. It was filled with hot water.
“那是在茶沏好后用来保温的，”魏华说，“用来装热开水的。”