我要你从现在起注意提高警惕，步步当心。
I want you to be on your guard and watch your step from now on.
年纪大一点的小孩可以告诉他拿相机要当心，展现如何应用并要供他特殊警惕。
A much older child can be taught to handle the camera with great care and shown how to use it or asked to be extremely careful with it.
年纪大一点的小孩可以告诉他拿相机要当心，展现如何应用并要供他特殊警惕。
A much older child can be taught to handle the camera with great care and shown how to use it or asked to be extremely careful with it.
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