Vad
n. 增值与数据网络
🗣️ 情景例句
I have worked hard at my major subject.
我对主修课特别用功。
I don't seem to have any luck today.
我今天运气不好。
The question became one of whether Man could control the disease he had invented.
现在的问题是，人类能否控制住这种人为的疾病。