Active constraint
[計] 有效約束
?? 詞語組成解析
active
['?ktiv]
adj. 積極的，活躍的，有生氣的;迅速的，敏捷的;有效的，起作用的;
n. [語法]主動語態;積極分子，活躍的人;
??? 情景例句
Or at least give him some advice.
再不然至少可以給他一些忠告。
Nothing is difficult to the man who will try.
世上無難事，只要人肯試。
Oh, and by the way, my wife wants to know if Mary needs any help.
喔，順便問一問，我妻子想知道瑪麗是否需要幫忙。