Calculus of variation
[计] 变分法
🧩 词语组成解析
calculus
['kælkjələs]
n. [医]结石，石，积石，牙垢;[数]运算，演算，微积分（学）;
ule,ulus 后缀;表”小,少”#词根助记：calc石头(古时候用石头来计算)##calc 石灰,石头#词根助记：calc石头(古时候用石头来计算)
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
The way people act in private is often quite different to how they act when in public.
人们私下的行为跟公共场合的行为是截然不同的。
The whole thing was held up about half an hour.
整个事情耽搁了约半小时。
We were out of the part you needed.
你要的那种零件我们没有货了，