Experts are trying to devise ways to clean up the huge slick.专家们正想方设法清除这片面积巨大的浮油。White supremacists devise new Methods: To disenfranchise Negroes.白人至上论者想出新的方法以剥夺黑人的公民权.It is not easy to devise means.筹措维艰....
为了使连续12小时的飞行不致单调乏味, 航空公司在机舱里给旅客放一部故事影片.To relieve the unbroken twelve hours of flying, the airline provides a feature in the cabin.时延使连续遥操作闭环反馈控制系统变得不稳定.The close - loop feedback system of continuous teleoperation become...