Calculuses
微积分, 微积分学, 计算, 演算, 结石, 积石, 牙垢
🗣️ 情景例句
Excuse me, but could I ask you a quick question?
对不起，我能问你一个简短的问题吗？
It is an equal failing to trust everybody, and to trust nobody.
信任一切与不信任任何人，同样是弱点。
During the journey, their boat began to sink.
途中，船开始下沉，