tropical areas的用法和樣例：
例句
- Mangrove forests replace salt marsh in tropical regions and support a rich fauna.
紅樹(shù)林在熱帶區域取代了鹽水沼澤，并且支持了豐富的動(dòng)物區系。 - Also, tropical rocks tend to experience deep weathering, rarely poking above the ground as outcrops.
而且，熱帶區域的巖石往往要承受更為嚴重的風(fēng)化作用，很少有類(lèi)似巖石露頭的情況發(fā)生。
