"Traditional environmental risks are those that face largely the poor in China, risks like drinking water contaminated with infectious organisms or highly polluted indoor air from people burning wood or other dirty fuels inside homes without chimneys."

VOA: standard.2010.04.07

And lots of people who were chimney sweeps were executed because they had been cleaning chimneys and they had gun-- the equivalent, they had charcoal on their cheeks.

许多被处决的人只是烟囱清扫工,原因只是他们清扫烟囱并且他们有枪,类似枪的东西,他们脸上有碳灰

耶鲁公开课 - 1871年后的法国课程节选

And lots of people who were chimney sweeps were executed because they had been cleaning chimneys and they had gun-- the equivalent, they had charcoal on their cheeks.

许多被处决的人只是烟囱清扫工,原因只是他们清扫烟囱并且他们有枪,类似枪的东西,他们脸上有碳灰

耶鲁公开课 - 1871年后的法国课程节选