ecologic problems的用法和樣例：
例句
- Forest entomologists have concentrated on ecological problems.
森林昆蟲(chóng)學(xué)家所重視的是生態(tài)問(wèn)題。 - Sewage itself is another major contaminant of water that can cause ecological problems and such human diseases as cholera and dysentery.
污水是引起水體污染的另一個(gè)重要因素，它會(huì )導致一些生態(tài)問(wèn)題，使人引發(fā)霍亂和瘧疾。
