手臂: arm前后: around; about摆动: swing; sway; oscillate; pend ...前后摆动: heel and toe; reciprocating把手前后摆动: saw屈腿前后摆动: bent leg swing forward and backward后摆动作: swing to the rear向后摆动: backswing手臂摆动姿势: arm carriage机后摆动升降台: back tilting table后摆: back vent length; backswing; backward swing; hop out; kick up; rearward swing; swinging back; tail/sweep/coattail手臂向相反放向摆动: arms swing to the oppostite direction后摆分腿支撑后倒弧形摆动: free hip circle rearways straddled to underswing; free hip circle reqrways straddled to underswing前后: 1.(时间接近) around; about 春节前后 around the spring festival2.(自始至终) from start to finish; from beginning to end; altogether 这篇小说从动笔到定稿, 前后用了一年时间。 the novel took a year to write altogether, from start to finish. 他前后来过四五次。 he has been here four or five times altogether.3.(前面和后面) front and back 受到前后围攻 be attacked both front and back; be caught between two fires; 房子前后都是果树。 there are fruit trees in front and at the back of the house臂前部: regio brachii volaris臂前面: anterior brachial facies; anterior surface of arm; facies brachialis anterior臂前区: anterior brachial region surface; regio brachii anterior; region brachialis anterior; regiones brachii anterior字臂前: twin i-beam front suspension摆动: 1.(摇摆) swing; sway; oscillate; pendulate; waggle; wobble; vibrate; wiggle 柳条迎风摆动。 the willows swayed in the breeze. 指示针来回摆动。 the pointer flickered.2.[机械工程] jigging motion; nodding action; oscillating movement; pendulum motion; shimmy; swing motion; swinging; wobbling; pendulation; hunting; vibration; see-saw; oscillation; runout后摆杆: take back后摆上: back uprise后摆省: back waist dart断手臂: sever arm金手臂: man with the golden arm, the劈手臂: arm cut