Simplified clean-up doors and other doors are equipped with a safety locking device.
简体门及其它清理门都有装有安全自锁装置。
A Dutch artist and designer has come up with a device he hopes will suck pollutants from Beijing's smog-cloaked skies, creating columns of clean air for the city's surgical-mask wearing residents.
一位荷兰艺术家兼设计师发明了一种装置，他希望借此装置能够为北京烟雾笼罩的天空清除污垢，为那些戴着口罩的北京市民创造新鲜的空气。
A Dutch artist and designer has come up with a device he hopes will suck pollutants from Beijing's smog-cloaked skies, creating columns of clean air for the city's surgical-mask wearing residents.
【导读】一位荷兰艺术家兼设计师发明了一种装置，他希望借此装置能够为北京烟雾笼罩的天空清除污垢，为那些戴着口罩的北京市民创造新鲜的空气。
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