Domain relational calculus
[計] 域關系演算
?? 詞語組成解析
relational
[ri'le??nl]
adj. 親屬的，相關的，有關的;
calculus
['k?lkj?l?s]
n. [醫]結石，石，積石，牙垢;[數]運算，演算，微積分（學）;
ule,ulus 后綴;表”小,少”#詞根助記：calc石頭(古時候用石頭來計算)##calc 石灰,石頭#詞根助記：calc石頭(古時候用石頭來計算)
??? 情景例句
You're just going to have to have ice cream.
你只好得吃冰淇淋了。
I couldn't help it.
我沒有辦法。
He has pointed out that the tree is a useful source of income as tour-ists have been coming from all parts of the country to see it.
他指出，由于人們從全國各地紛紛前來參觀這棵樹，