Biquintile
五分之二圓周差
??? 情景例句
OK.
好。
I don't know whether it will rain or not.
我不知道是否將下雨。
You will not have to spend the next few days recovering from a long and arduous journey.
用不著因為漫長的旅途的辛苦而花幾天時間休息來恢復精神。