Dynagraph
内应力测定仪
🗣️ 情景例句
Where's Mom?
妈妈呢？
I suppose it's difficult for you to do this.
我推测对你来说做这件事情是很困难的。
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？