plant region的用法和樣例：
例句
- In seed plant flora, the floristic composition is dominated by the temperate elements, which have tight relation to tropic elements.
種子植物區系以溫帶成分佔優勢，與熱帶成分有緊密的聯繫。 - The analysis results indicated that the floristic region of Changqing National Reserve is one of the important composition area of Qinling flora.
分析結果認為，長青國家自然保護區是秦嶺山地植物種類極為豐富的地區之一，也是構成秦嶺種子植物區系的重要組成之一。
