Ninopterin
[化] 9-甲叶酸
🗣️ 情景例句
My instructor thought that the beginner's class was too easy for me.
老师认为初级课程对我来说太容易了。
Bill was very jumpy as he waited for the phone to ring.
贝尔忐忑不安地等着电话来。
It's a fine day。
今天是个好天。