在21世纪用英语怎么说是 "in the 21st century"。"21st century" 中的 "21st" 是由 "21" 和 "st" 组成的,"21" 表示 21 世纪,而 "st" 是指 century 的第一个字母 "c" 的缩写。这种表达方式可能源于人们为了方便起见而采用的简写方法。

  例句:
  - In the 21st century, technology has advanced rapidly.
  - Many challenges face us in the 21st century, including climate change and overpopulation.
  - The 21st century has seen significant changes in the way we live and work.
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最佳回答 2023-01-28