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假如您一个人走在灯光昏暗的地下通道里,前面有几个人影挡住去路,您千万不要惊慌失措,尽量用平静的语气问:“妈妈,是您吗?”
If you walk alone in the dimly lit underground passage with several people in the front blocking the way, do not panic and try to calmly ask: “Mom, are you?”