Serumal calculus
[醫] 血清性牙垢, 血清石
?? 詞語組成解析
[醫] 血清的
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'll never get to college to find out, Robbie,
你根本就進不了大學去探究這個問題的答案 ，Robbie，
Marry in haste, and repent at leisure.
草率結婚后悔多。
but children were then too cowed to let them know how they really felt.
孩子們只不過被嚇得不敢讓父母知道自己的想法罷了。