The movement of used tyres not only spreads mosquitoes that have a limited reach, but also contributes to the introduction of non-native species, which are often more difficult to control, increasing the risk of disease.
31. 旧轮胎的转移不仅传播了触及范围有限的蚊虫，而且还导致了非本土物种的引入，通常这种情况会更加难以控制，增加疾病风险。