求助于，依赖，转而依靠

1. 求助于,转而依靠：fair play 公平的竞赛;公平对待 | fall back on 求助于,转而依靠 | fall back 后退,退却

2. 借助于,依靠：do away with 废除,去掉 | fall back on 借助于,依靠 | fall in with 符合,同意,赞成;与...交往

3. 求助于：express mail 快递 | fall back on 求助于 | fall behind 落后

4. 依赖,依靠;求助于：every other 每隔一个 | fall back on 依赖,依靠;求助于 | far from 毫不,远非,根本不是

1. (其他方法行不通时)转而做，转而使用，转而依靠
If you fall back on something, you do it or use it after other things have failed.

e.g. Unable to defeat him by logical discussion, she fell back on her old habit of criticizing his speech...
由于在条理上说不过他，她便转而重施故技，抓住他的演讲不放。
e.g. When necessary, instinct is the most reliable resource you can fall back on.
必要时，最保险的办法就是凭直觉判断。