词典释义：
释义
as a precaution
以防万一。
双语例句
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You probably won't need to call—but take my number, just in case.
你很可能无需打电话，不过还是记下我的电话号码吧，以防万一。
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I have also taken out a life insurance policy on him just in case.
我也给他买了一份人寿保险以防万一。
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I had my camera ready, just in case I saw something that would make a good picture.
我把照相机准备好，万一看到什么值得拍的就可以拍下来。
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I guess we've already talked about this but I'll ask you again just in case.
我想我们已经讨论过了这个问题，但为保险起见，我再问你一次。
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You'd better take an umbrella just in case of rain.
以防下雨，你最好带把伞。
百科
如果命运跟你过不去，你该怎么办？自从大卫·凯斯救了弟弟一命之后，他的整个世界都改变了。他必须藏起来，变成另外一个人，试图逃避命运——如果可能的话。这本黑色喜剧小说幽默又发人深醒，堪称2006年最值得少年读者期待的作品之一。
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I'm just saying, get his number, just in case.
我建议你去问他的电话号码，以防万一。
《Friends Season 7》《老友记 第七季》
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Great. Train ride. And one to Greenland. Just in case.
哦，好。火车能到。另一个在格陵兰，以防万一。
《The Secret Life of Walter Mitty》《白日梦想家》
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This is an extra copy to have on file. You know, just in case.
这是用来存档的另一个副本，你知道的，以防万一。
《The Devil Wears Prada》《穿普拉达的女王》
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Yes, I did. But you don't understand. Why? Why did you do this? You know, just in case. In case of what?
对，但你误会了。你为何这样做？只是以防万一。万一什么？
《Monsters University》《怪兽大学》
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There, is that better? A little bit. Madam Gazelle. Oh, do you feel sick too, Zoe? I might feel sick later, can I sit at front just in case?
现在感觉好点了吗？好一点点了。羚羊夫人。噢，你也感觉不舒服吗，佐伊？我怕我一会儿会感觉不舒服。我能坐前面去吗？以防万一。
《Peppa Pig Season 2》《粉红猪小妹 第二季》
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However, just in case it doesn't work out, I decided to plan this pre-funeral.
但是，万一不行的话，就先安排一场生前的葬礼。
《The Fault in Our Stars》《星运里的错》
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Why? Just in case somebody forgets to wipe them out at the end of a maintenance session.
为什么？以防有人忘记在维护期结束后，清除他们的数据。
《Westworld Season 1》《西部世界 第一季》
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All right, you're ready? I'm gonna go in there with you. Thanks. You know just in case there's more than one dude in there with it. Again, Thanks. Yeah.
你准备好了吗？我跟你一起进去。谢谢。以防里面不只有一个男的。再一次谢谢你。是啊。
《Friends Season 9》《老友记 第九季》