21世紀(jì)的英文怎么說

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　　21世紀(jì)的英文：

　　The 21st century

　　21世紀(jì)的英文例句：

　　1. DAB is the radio system of the 21st Century.

　　數(shù)字音頻廣播是21世紀(jì)的無線電廣播系統(tǒng)。

　　2. His speech called for a step change in attitudes to the environment in the 21st century.

　　他的演講呼吁在21世紀(jì)徹底改變對(duì)待環(huán)境的態(tài)度。

　　3. Supersonic flight could become a routine form of travel in the 21st century.

　　搭乘超音速飛機(jī)會(huì)成為21世紀(jì)常規(guī)的旅行方式。