Tkn
[医][=total kjeldahl nitrogen]总克氏氮
🗣️ 情景例句
Did you ever think of photographing an aerobics class?
你想过拍摄有氧运动课吗？
So he keeps on studying after his English classes in order to prepare for life in America.
所以他在英语课下课后还继续学习，为以后在美国生活做准备。
He thought I was on fire.
他认为是我着火了。