进出境旅客行李物品申报单 Baggage Declaration Form for Incoming/Outgoing Passengers
了解3-1-1的例外物品：可以携带超过3盎司的液体药品，婴儿配方奶粉或是母乳出行吗？
Know the 3-1-1 exceptions: Traveling with more than three ounces of liquid medications, baby formula, or breast milk?
如果出行时间较短(1 - 3天)，且不准备在户外宿营，携带物品不多，宜选中小容积的背包，一般25升至45升就够了。
If a shorter travel time (1-3 days), and was not prepared to outdoor camping, carrying goods is not much, should choose small volume of the backpack, generally 25 to 45 liters is enough.
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