他给房屋建筑商提供了现代的木构架。He supplied housebuilders with modern timber frames.该机器的精妙之处在于其构架呈流线型。The secret of the machine lies in the aerodynamic shape of the frame.盐水对轻合金飞机构架和布质机翼蒙皮有腐蚀作用.Salt water corroded the light alloy frame...
The road builders brave the wind and snow on the plateaus all the year round.筑路工人长年奋战在风雪高原.Plains, plateaus, and mountain ranges are major landforms.平原 、 高原和山脉都是主要的地形.Mountain land, hills, plateaus, plains, criss crossin...