The noise pollution survey revealed a rather spurring and possibly amusing old fashioned source of noise.这个有关噪音的污染调查还揭示了一种出人意外而同时可能会引人意外而同时可能会引人发笑的老式噪音源.Only 16 per cent of young women in a 1990 survey considered themsel...
传送带下沉重的钢滚筒the heavy steel rollers under the conveyor belt这个大齿轮带动小齿轮使滚筒旋转.This large gear turns the small one to rotate the cylinder.粉碎辊是波纹式滚筒, 还常是螺旋割纹式.These rolls are corrugated cylinders, usually of the spiral type....
Older cars inevitably lack the latest safety refinements.老款的汽车难免缺少经过改进的最新安全保护装置。The new model has electric windows and other refinements.新型号有电动窗和其他改良装置.The oven has an automatic timer and other refinements.这个烤箱有自动定时器及其他改...