Bicausality
雙重因果關系
??? 情景例句
Can I get you something, Mr. Stewart?
要我替你拿點什么嗎， Stewart先生？
You can count on us.
你可以信賴我們。
Suddenly, a middle-age lady got on the train and sat opposite Sally.
突然，一個中年婦女上了火車，坐在薩莉的對面。