arctic desert zone 北极荒漠带
arctic desert soil 极地漠土
arctic polygon desert 北极多边形荒漠
Arctic-alpine semi-desert 北极高山半荒漠
Arctic and Desert 北极和沙漠
Desert and arctic animals 沙漠和极地动物
Arctic-alpine desert 北极高山荒漠
The Arctic desert is one of the most deserted landscapes on the Earth.
北极荒漠是地球上最荒凉的景观之一。
The Canadian Arctic is a vast, treeless polar desert that's covered with snow for most of the year.
加拿大的北极是一个广阔的、没有树木的极地沙漠，一年中大部分时间都被雪覆盖着。
About 460 species: almost cosmopolitan except for arctic and desert areas and most of the lowland tropics; 64 species (33 endemic) in China.
大约460种：除了北极和沙漠地区和大多数低地热带外几乎世界性分布；中国有64种(33特有种)。
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