Stds
(STD 的复数) [计] 标准
🗣️ 情景例句
Am I making my self clerar?
我讲的清楚吗？
The petroleum region is centered largely in the north.
那里的石油区大部分集中在北部。
But this was before Annie Sullivan came to stay.
但是，这都是安妮·莎利文来住下之前的事了。