Relational calculus
[计] 关系演算
🧩 词语组成解析
relational
[ri'leʃənl]
adj. 亲属的，相关的，有关的;
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)
🗣️ 情景例句
What are some of the other sports products you're making?
你们现在还生产哪些运动产品？
Car manufacturers are having a bad time.
汽车制造商的日子不好过。
Which do you think is more interesting?
你认为哪个节目更有趣呢？