It's cross four continents. Here is how it works.
跨越四大洲,下面是它的运行方式。
Spanish is an official language on four continents and is the mother tongue in 21 countries.
西班牙语是四大洲21个国家的母语和官方语言。
The author contends that during this period there existed three oceans and four continents on the Earth.
笔者认为寒武纪全球存在三大洋、四大陆域。
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