Calculus of variations
[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];
n. 变奏曲, 变更；变种（variation的复数形式）
🗣️ 情景例句
But at my age,
但是，像我这般年纪，
Every dog has his day, and every man his hour.
人人都有得意的日子。
The sea bed was scoured with powerful nets and there was tremendous excitement on board went a chest was raised from the bottom.
他们用结实的网把海床搜索了一遍。