Know at least two or three languages, so if one dies off, you have another one to fall back on while you train for a new technology.

至少了解两到三种 语言，所以，如果某种语言过时了，你在学习新技术的时候还可以依靠另一种语言。

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Allowing one customer to dictate my hours was the worst mistake I ever made as when that contract was over I had nothing to fall back on.

让一个客户对我指手画脚是我曾犯过的最大的错误，因为当这份合同结束时我再也没有其他的客户了。

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In this way if one crop gets diseased, or one harvest succumbs to drought, or one hillside is flooded, they have alternatives to fall back on.

凭借这种方法，如果作物生了病，或者收成受到干旱的影响，或者遭遇山洪，他们都有替代的方法可供依靠。

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Even when priming herself for a glittery state occasion, Queen Elizabeth II has never been one to fall back on the standard little black dress.

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Presumably that would also make it easier for a fund to fire one administrator, knowing it has a second to fall back on.

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This fall Portmann will send one to hover over tsunami sensors embedded on the ocean floor to collect data and beam it back to shore.

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