Selediol
[医] 胶态硒(治癌)
🗣️ 情景例句
I think
我想，
They teach you English in an intensive course lasting just a week.
他们用一周的时间教速成英语课程。
No, not exactly. But later, peole developed a way of printing, using rocks.
不完全是这样。但后来，人们利用石头，研制了一种印刷方法。