We picked up two submarines on sonar.我们用声呐系统观察到两条潜水艇.They bottled up the submarines in their nest.他们把潜艇困在巢穴里,使其无法出击.He had a fascination for submarines and joined this branch of the service.他对潜艇非常着迷，因此加入了潜艇部队。...
Gas dilates the balloon.气体使汽球膨胀.Exercise dilates blood vessels on the surface of the brain.运动会使大脑表层的血管扩张。The pupil of the eye dilates and contracts in response to light.作为对光线作出的反应,眼睛的瞳孔会放大或缩小....
他发动了汽车，车发出平稳的嗡嗡声。He started the car, which hummed smoothly.我们以平稳的速度开车.We drove at a steady rate.他的精神总是平稳的,并且他又是个循规蹈矩的人.His spirits were always equable and he was an observant person....