Roadside gullies are generally cleared manually every two weeks. Larvicidal oil is applied on a weekly basis as a precaution against mosquito breeding.是什么意思_Roadside gullies are generally cleared manually every two weeks. Larvicidal oil is applied on a weekly basis as a precaution against mosquito breeding.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句