X factor
n. 未知因素
?? 詞語組成解析
factor
['f?kt?]
n. 因素;<數>因子;代理人;
vt. 把…因素包括進去;[數學]分解…的因子，將…分解成因子;以代理商（或管家等）的身份行事，做代理商（或管家）;
vi. 做代理商（或管家）;
??? 情景例句
Spring has sprung and all the flowers are blooming.
春天來了。花兒都開了。
Cat got your tongue?
怎么不說話了？
Up to the time of his death, Richard Colson was one of the most notable figures in our town.
理查德。科爾森生前是我們鎮上最有名望的人之一。