Variable Zone的用法和樣例：
例句
- Most of China is in the temperate zone.
中國的大部分地區在溫帶。 - In the temperate zone in spring, temperatures fluctuate greatly from day to day, but day length increases steadily by a predictable amount.
春天的溫帶地區，氣溫每天都變化不定，但是日照長(cháng)度卻以一個(gè)可預知的數量穩步增加。
詞匯搭配
- Variable Zone [氣]溫帶
