Variation principle
[计] 变分原理
🧩 词语组成解析
🗣️ 情景例句
Mrs. Stewart and I
Stewart太太和我
The product gives you an edge over your competitors,I guess.
我认为你们的产品可以使你们胜过竞争对手。
In his twenties Frank used to make spare parts for aeroplanes.
20多岁的时候，弗兰克曾生产飞机零配件。