Pigeons fluttered in and out, cooing gently.鸽子们低声咕咕地叫着，扑扇着翅膀飞进飞出。the sound of pigeons cooing鸽子咕咕的叫声The boy frightened away the pigeons from the roof.那男孩把屋顶上的鸽子吓飞了....
The secret of the machine lies in the aerodynamic shape of the frame.该机器的精妙之处在于其构架呈流线型。Aerodynamic forces and moments are strictly speaking functionals of the state variables.严格说来,气动力和力矩是状态变量的泛涵.These effects appear to b...
The name Sahara conjures up images of a desert of aridity."撒哈拉"这个名字使人想起干旱的沙漠情景....the great nomadic tribes of the Western Sahara.西撒哈拉伟大的游牧部落...the barren wastes of the Sahara.贫瘠的撒哈拉沙漠The Sahara Desert is a natural barrie...
But most meetings are seen as immovable blocks in diaries.但是大多数会议被视为工作日程表中不可更改的部分.All bearings are on immovable supports at the same elevation.全部轴承都位于同样高度不可动的支承上.Jim stopped inside the door, as immovable as a setter at t...