You don't have to go running upstairs every time she rings.用不着她一来电话你就往楼上跑。They actually moved down from upstairs because the rent's that expensive.他们确实从楼上搬到了楼下，因为房租太贵了。She climbed the steps and proceeded along ...
Frances invited them to occupy the upstairs of her home.弗朗西丝邀请他们住在她家的楼上。They huffed and puffed as they carried the sofa upstairs.他们把沙发抬上楼时气喘吁吁。I'll take my coat upstairs. Shall I take yours, Roberta?...我要把我的外套拿到楼上去。...
从中提取的松香和鞣酸是化学工业上很需要的.The risin and tannin that can be extracted from it are sought by the chemical industry.从3点钟以后,它们就燃烧着松香.From three o'clock onward they would be burning resin.在实验室内用一 步法 合成了松香改性壬基酚醛树脂.Rosin modifi...