这是平行四边形的对边.These are the opposite sides of the parallelogram.环面可由矩形把其两对对边分别重叠起来而得到.A torus can be obtained from a rectangle by identifying opposite sides.当各块板块彼此分离时, 他们又在对边与其它板块发生碰撞.As the plates move apart, they encount...
It is hoped the procedure will trigger an immune response that will wipe out HIV-infected cells while leaving non-infected cells unharmed.希望这一治疗会激发免疫反应,清除感染了艾滋病病毒的细胞，同时又不损伤未感染细胞。The car was a write-off, but everyone esca...
Lectures will be interspersed with practical demonstrations.讲课中将不时插入实际示范。The grass was interspersed with beds of flowers.草地上点缀着许多花坛.Bushes were interspersed among trees.灌木散布在树林之中....
他们慢慢地从舞台后方的左侧移至正中。They slowly moved from upstage left into the centre.为安全起见，千万别站在马的正后方。For safety'ssake, never stand directly behind a horse.她总是坐在司机驾驶位置的正后方。She always sits immediately behind the driver....