很多工厂都让毒气和毒烟排放到空气里。
Many factories allow poisonous gas and smoke to escape into the air.
毫无节制地将毒气、毒烟和有毒物质排放到空气和河流中引发了许多环境和社会问题。
Unlicensed emission of toxic gases, fumes and discharge into air and rivers has caused a great deal of environmental and social problems.
毫无节制地将毒气、毒烟和有毒物质排放到空气和河流中引发了许多环境和社会问题。
Unlicensed emission of toxic gases, fumes and discharge into air and rivers has caused a great deal of environmental and social problems.
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