如果不工作，重新开始，在第3步，并仔细检查一切。
If it didn't work, start again at step 3 and double-check everything.
列个清单并仔细检查：为你旅途中需要的东西做一个清单。
Make a list and check it twice: Make a list of all the items you plan to take on your trip.
预定的有关信息应向客人重复，并仔细检查，以免发生错误。
Information should always be repeated to guest to double-check that there are no errors.
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