At a national level, a survey by insurer Direct Line published in December suggested that nearly four million UK adults might be living in a home without any smoke alarm at all. In the US, an estimated 16% of households do not have a functioning smoke alarm.
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2009 年，张清森在一家外贸公司做业务员，但奈何工资太低，老板也抠，日子过得难受。