只有预防万一，才能万无一失。
如果可能的话建议带上一张信用卡预防万一。
昨晚我们把他换下场是预防万一，他在我明天的比赛计划中。
We took him off last night but it was only a precaution and he'll feature in my thinking for tomorrow.
双肩背包已经装满了，对我这样年纪的女人，这并不奇怪，看起来包里装了太多预防万一的药品。
The backpack is filled and, unsurprisingly for a woman my age, seems to contain rather too many just-in-case medications.
我们可以这样理解，无论如何，项目过程发布命令要求每个个体开发人员提供对他们编写的每个功能的详细描述，只是预防万一这些信息可能对某些人有所价值。
Let's say, however, that the project process decrees that each individual developer provide detailed descriptions of every function they write, just in case the information might be useful to someone.
我们可以这样理解，无论如何，项目过程发布命令要求每个个体开发人员提供对他们编写的每个功能的详细描述，只是预防万一这些信息可能对某些人有所价值。
Let's say, however, that the project process decrees that each individual developer provide detailed descriptions of every function they write, just in case the information might be useful to someone.
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