ask them up front
事先询问他们
以上为机器翻译结果，长、整句建议使用 人工翻译 。
If you're on a vacation, and you suddenly realize that you forgot to lock the front door, you can call up your trusty ol 'neighbor and ask them to head over to your house and lock it for you.
要是你正在度假，突然意识到自己忘记锁大门了，你可以打电话给信任的邻居，让他们前去你家，帮你锁好大门。
youdao
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