那是你的双肩背包。
W: Your backpack is very big and today's flight is quite full. I am afraid that you will have to check your backpack too.
W：您的背包太大了，今天航班的人很多，恐怕还得将它托运。
You can pick books that your toddler is currently reading or ones that she enjoys all the time and put those in to the waiting room backpack.
你可以挑一些孩子正在看的书，或是孩子一直很喜欢的书，把这些书和那些工具放在一起。
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