Chalky calculus
[醫(yī)] 石灰石
?? 詞語組成解析
a. 白堊的\\n[建] 白堊的
calculus
['k?lkj?l?s]
n. [醫(yī)]結(jié)石，石，積石，牙垢;[數(shù)]運算，演算，微積分（學(xué)）;
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
Could I?
我可以用嗎？
I'd like to have you come to my house for dinner sometime.
改天請到我家來吃飯。
Hay had been cut and cowsheds had been cleaned.
干草已切好，牛棚也打掃干凈了。