It will get bigger for you, if you will, usually because the material is soft and will expand or because there is some additional space in the piece of luggage that you can use if you need more room.
如果您愿意的话， 它会变得更大，通常是因为材料柔软并且会膨胀， 或者因为行李箱中有一些额外的空间， 如果您需要更多空间可以使用。