新起点小学英语四年级上册:U5 Safety

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Don't run down the stairs. It's dangerous!
不要跑下楼梯 这很危险

Don't climb on the window ledge.
不要爬到窗台上去

Be careful! Use the sidewalk.
小心点 走人行道

OK!
好的

Please wait for the green light. It's safe.
请等绿灯 这样安全