转身英语是turn-back。
turn back：（使）往回走; 翻起，折转; 扭转; 掉过头来。
turn back 网络解释：
1. 回来：bring back 拿回;使...回想起 | turn back 回来 | get back 回来;恢复;要回; 带回。
2. (使)折回;(使)往回走：on the turn 正在转变中 | turn back (使)折回;(使)往回走 | in turn 依次,轮流;转而,反过来。
3. 翻过来：turn away转变方向;拒绝 | turn back翻过来 | be answerable for应对......负责。
4. 返回,转回去：turn away打发走,驱逐,转过脸去 | turn back返回,转回去 | turn round转过身来。
双语例句：
1、他没有回答，反而转身离开了房间。
He didn't reply. Instead, he turned on his heel and left the room.
2、他们看见我们过来，转身就跑。
They turned and ran when they saw us coming.
3、他们叫我站着不动并且不要转身。
They told me to stand still and not to turn round.