When traveling to and from your destination, bring an extra bag with a change of clothes in the event that your luggage is lost.

外出旅游时，要另外带一个包，装上换洗衣服，以免行李丢失无衣可换。

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And back in the pack up their luggage, the best is to put in cleaning, forgot about the rent, so can very good check whether have lost items.

并且在打包好自个的行李物品往后，最佳是把房租在清扫拾掇一下，这么能非常好的检查一下是不是有丢掉的物品。

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My luggage is all lost.

我的行李全都不见了。

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Airlines exclude valuables and computer equipment from liability and reimbursement if luggage is lost or stolen, and travelers should always carry computers, cameras and jewelry with them onboard rather than checking it in luggage.

WSJ: Oops! I Forgot My iPad on the Plane

Along with flight delays lost luggage is the most common cause for passenger complaint.

BBC: Q&A: Air passengers' rights

Similarly, over the next year or two, American will likely see more reservation problems, lost luggage and frequent flier glitches than usual, as passenger information is misplaced during the transition.

BBC: The effects of the American Airlines merger