independent day number的用法和樣例：
例句
- Even several weeks before the day it became jammed with fighter craft.
在作戰開(kāi)始日數周前，該地已滿(mǎn)布戰斗機。 - The most significant oasis effect is the decrease of both average wind speed and the number of gale days.
綠洲效應最為顯著(zhù)的一個(gè)方面是風(fēng)速的變化，綠洲使平均風(fēng)速和大風(fēng)日數大幅度減少。
