fall back on

基本解释

Doctors sometimes fall back on old cures.
医生们有时求助于传统疗法。
Believers, of course, can fall back on the logically less rigorous support that they characterize as faith.
当然，信徒则可以对他们描述为信仰的东西求助于逻辑上不那么严密的支持。
I even wrote a novel about how people needed to fall back on antiquated technology to survive the storm when everything else failed.
我甚至写了一本小说——为了在风暴中幸存，当其他一切都灰飞烟灭时，人们需要求助于古老的技术。

Then he would fall down on the floor again like a ball of dirt and start rubbing the side of his head with his back foot as if he had no idea he had been doing any more than any frog might do.
Well, I actually think the Russian formalists can be defended against the charge that, unbeknownst to themselves, they fall back in to form-content distinctions by insisting on this variety of dualities.
但是我认为,这些形式主义者们在不自觉中，对于形式和内容的双重性,太过偏执。
耶鲁公开课 - 文学理论导论课程节选
Of course, you can imagine the thoughts of Louis XVI as they were cutting back his hair to await the fall of the guillotine on the 21st of January, 1793.
你可以想象下在1793年1月21日这天,当人们拽住路易十六的头发,等待断头台下落时他会想些什么
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If (when) this happens, there will be no third party to fall back on.
ENGADGET: blogger-avatar

If you fall back on something, you do it or use it after other things have failed.