大约70种：亚洲热带，北美和南美洲，太平洋群岛；在中国的一种。
About 70 species: tropical Asia, North and South America, Pacific Islands; one species in China.
在北美洲和南美洲发现的许多遗址也描述了专门的工具和普遍的埋葬活动。
Specialized tools and common burial practices have also been described in many sites found throughout North America and into South America.
欧洲在亚洲旁边。北美洲和南美洲是邻居。
Europe is next to Asia. North America and South America are neighbours.
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