1.The story mainly tells you the reasons why you don't need to worry about the plan accidents.
2.They use X-RAY machines.
3.Knives and scissors,etc.
4.The first one means plan accidents,the other means the safty book.
1.The story mainly tells you the reasons why you don't need to worry about the plan accidents.
2.They use X-RAY machines.
3.Knives and scissors,etc.
4.The first one means plan accidents,the other means the safty book.
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