She stood up and began to pace to and fro.她站起身,开始来回踱步。The boat was rocking gently to and fro in the water.小船在水中轻轻地来回摇荡。They travel to and fro between London and Paris.他们奔走于伦敦和巴黎之间....
从1066年到17世纪,狐狸一直被视为害兽。From 1066 to the 17th century the fox was looked upon as vermin.它们的祖先是被培养来捕猎害兽.Their ancestors were bred to hunt and kill vermin.对农民来说,野兔是一种害兽,因为它吃幼嫩的作物.To a farmer a rabbit is vermin because it eat...