It would take three to six hours for a round trip.往返行程需要3到6个小时。The round-trip fare to Havana is 550 Irish punts ($673).去哈瓦那的往返票价是550爱尔兰镑（673美元）。He made a round-trip to the terminal and back.他到了终点，又折回来。...
It's been believed for centuries that great writers, composers and scientists are essentially quite different from ordinary people...几个世纪以来人们一直相信伟大的作家、作曲家和科学家从根本上就与普通人大不相同。On a cold day there can be quite a draught ...
滚齿刀具无需筛板, 粉碎颗粒度均匀,粉尘含量极少.Rotary cutters need no screen, but produce consistent grain size , low powder contain.采用旋流板塔替代原系统的筛板塔.The sieve - plate tower was substituted by spiral flow inducing tray tower.简要介绍了筛板塔在工程中的应用.A ...