The clearest example is that, while many species native to Taiwan have begun the path to ex tinction, some imported species, like the Tilapia or the Ampullarius canaliculatus having been brought here unwittingly, have spread in the search for food and survival.
都市中綠地的保留與經營，和保存市郊尚未被開發的自然環境，就變得異常重要了。