back and forth
来回───back and forth
He paced back and forth.───他来回踱步。
I could see the branches of the trees moving back and forth.───我能看到树枝来回摇摆。
Jack speeds off, jerking Carroll back and forth backseat, and then quickly slams on the brakes.───杰克加速把车开起来, 使凯文在后车座来回颠簸, 然后他加速地踩下了刹车.
We must keep an eye open for the stranger who is looking back and forth all the time.───我们必须留心那个老是东张西望的陌生人.
Others toss gold coins back and forth as if they were a child's ball.───其他抛金币来回,好象他们是孩子的球.
I had to drive back and forth to get my car into the narrow space.───我不得不前后倒车让我的车开进这个狭隘的空间.
Move the tooth brush back and forth with short, vibrating stokes.───用短距离, 振动的力量前后移动牙刷.
He discovered that the rattle came from a hanging lamp that was swinging back and forth.───他发现声响来自一盏来回摆动的吊油灯.
She rocks back and forth on her chair like a mischievous child.