source region的用法和樣例：
例句
- This study has investigated the region for the epidemic area of tsutsugamushi disease.
本研究對該地區恙蟲病疫源地進行全面研究。 - As the direct potable water source in Jintan City, Qianzidangdistrict is in the later stage of mesotrophication upon the recent monitoring data.
錢資盪是金壇市目前直接飲用水源地，根據環境監測結果，它已處於中營養化後期。
