As we travel south, the countryside begins to undulate as the rolling hills sweep down to the riverbanks.我们一路南行，乡间开始变得起伏不平，绵延的山峦一直延伸到河岸。To undulate more freely, keep you hands about shoulder width apart.要波动的更自由些, 保持你的手与肩...
As we travel south, the countryside begins to undulate as the rolling hills sweep down to the riverbanks.我们一路南行，乡间开始变得起伏不平，绵延的山峦一直延伸到河岸。To undulate more freely, keep you hands about shoulder width apart.要波动的更自由些, 保持你的手与肩...
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...