Definite integral
[计] 定积分
🧩 词语组成解析
🗣️ 情景例句
Consider the cost before you decide.
你决定前要先考虑费用问题。
We have an extended warranty available at extra cost.
对于额外价钱我们有较长的保证期限。
It is only someone looking on from outside that can inject the dangerous thoughts.
只有外部的旁观者才能灌输危险的思想。