这些名词都意指空间的范围，尤指表面，由其特有的性质或特征而与其它词相区别。
These nouns all denote extents of space, especially on a surface, that can be differentiated from others by particular qualities or characteristics.
湿地是指多沼泽的区域，软而湿的陆地，一年中的大部分时间有水覆盖着土壤、或是有水存在于土壤表面或接近土壤表面的地方。
Wetlands are areas of marshy, swampy land, areas where water covers the soil, or is present either at or near the surface of the soil for a large part of the year.
而是指潮湿且细菌容易接触的器官表面，例如肺和易感染的内脏就很易受感染。
It is the damp and welcoming surface of places such as the lung and the gut that are at risk.
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