Sancycline
[化] 山环素; 6-去甲-6-去氧四环素
🗣️ 情景例句
This is a little difficult for her.
这对她来说有点不习惯。
My country is rich in natural resources.
我国自然资源丰富。
I can't understand why he is being so selfish. He isn't usually like that.
我不明白他此刻怎么这么自私。他平时不这样。