Semivariable
[经] 半变动的(成本)
🗣️ 情景例句
When's the last time you took a vacation?
上次你去度假是什么时候？
I approve of your decision.
我赞成你的决定。
But why did white people want to catch Africans and put them in chains?
但是为什么白人要把非洲人抓起来，戴上镣铐呢？