Another thing Katherine loved about Facebook was that she didn't have to think about time zones when updating family.
2017年6月四级真题（第一套）听力 Section C
Today, when time zones have less and less meaning, there is little tolerance for offices' closing for lunch, and worsening traffic in cities means workers can't make it home and back fast enough anyway.
2016年6月四级真题（第二套）阅读 Section C
英语六级真题
You can also use apps like Off Time or Unplugged to create tech free zones by strategically scheduling automatic airplane modes.
2018年12月六级真题（第一套）阅读 Section B
柯林斯高阶英汉双解学习词典释义
N-COUNT
（有某些特色或特点的）地区，地带，区域
A zone is an area that has particular features or characteristics.