鹟主要以有翅昆虫为食。Flycatchers feed primarily on winged insects.这只鸟迅速拍动双翅,继续飞行.The bird beat its wings rapidly as it flew on.羽毛最初由昆虫的翅瓣演化而来.Feathers initially developed from insect scales....
Most of the drug abusers in downtown areas are aged persons.而在城区大部分吸毒人员以中年人为多....a national commitment to providing treatment on demand for drug abusers.承诺在全国范围内为提出请求的吸毒者提供治疗Of course, not all alcoholics and drug abusers...