back-pedal

基本解释

Three boys lean over an upside-down mountain bike, turn the pedal back, spin it.
三个男孩伏在一个颠倒的山地自行车踏板转回去，旋转。
You may have to back-pedal to find ways to make a present endeavor more compelling and marketable.
你可能不得不背弃一些东西才能找到让现在的努力更加令人瞩目的方法。
There is reasonable design and high security on the low non-slip pedal and the access platform of the back door of the cabin.
低置防滑踏板和驾驶舱后门出入平台设计周到、安全性高。

Georgia introduced assignee liability, only to back-pedal after the state's subprime market started to seize up.
ECONOMIST: Securitisation
Taken aback by the public outcry, Mr Abbas was forced to back-pedal.
ECONOMIST: The Palestinians and the Goldstone report
Almost immediately, Mr Lee's party began to back-pedal.
ECONOMIST: Taiwan's flexibility has not been rewarded by China

If you back-pedal, you express a different or less forceful opinion about something from the one you have previously expressed.
If you say that someone back-pedals, you disapprove of their behaviour because they are not doing what they promised.
back-pedaling