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国庆长假,我们全家外出旅游,家里门窗紧闭了7天,回来后就闻到家里有股难闻的味道。我想发明一个窗户自动开关仪,它
National Day holiday, our family outing travel, home doors and windows closed for 7 days, came back to smell the smell of home stocks. I want to invent a window automatic switch instrument, it