He has her support to fall back on when the going gets tough.
当进展艰难时，他可以依赖她的支持。
When necessary, instinct is the most reliable resource you can fall back on.
必要时，本能是你可使用的最可靠的资源。
I have a little money in the bank to fall back on.
我在银行还有一点钱，需要时可以动用。
This forces the program to fall back on techniques that resemble manual memory management.
这使得程序不得不使用人工内存管理的老技术。
Even the most sophisticated companies have to fall back on established distribution systems.
不然的话，就算是最老练的公司们也不得不退回到原先制定的分配系统。
If the first plan fails, we can fall back on the second.
如果第一个计划失败了，我们还可以依靠第二个。
He has two plans, if one plan fails, he may fall back on the other.
他有两个计划，如果一个不行，还有另外一个计划。
I'm glad we kept some money in the bank so that we always have something to fall back on.
我很高兴我们在银行里还有钱，这样，我们总有些能依靠的东西了。
If that fails the postman always has the number and street to fall back on.
如果邮政编码有问题，邮递员也可以根据街道名称、门牌号码投递邮件。
Most answers fall back on the theories about the human mind and basic human needs.
答案源于对人类心智和基本需求的理解。
At least we can fall back on candles if the electricity fails.
停电时我们至少可以使用蜡烛。
Or fall back on the tried and trusted dial-up.
或者干脆重新使用可靠的拨号上网。
He hides money in the mattress so he can have something to fall back on.
他把钱藏在床垫里，以资有些东西作为靠山。
The enemy had to fall back on their final line of defence.
敌人不得不撤退到最后一道防线。
The soldiers were ordered to fall back on the final line of defence.
士兵们奉命退守到最后一道防线。
Aside from his meager savings, the old man has no resources to fall back on.
除了很少的一点积蓄外，这位老人别无其他经济来源可以依靠。
Aside from his meager savings, the old man has no resources to fall back on.
除了很少的一点积蓄外，这位老人别无其他经济来源可以依靠。
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