pollution problem 污染问题
water pollution problem 水污染现状
urban pollution problem 城市大气环境污染
membrane pollution problem 膜污染问题
environment pollution problem 环境污染问题
environmental pollution problem 环境污染问题
solved the pollution problem 解决了环境污染问题
address the pollution problem 重视污染问题
animal manure pollution problem 养殖业环境污染
From this, it is apparent that drastic steps must be taken immediately to develop corrective measures for the pollution problem.
从这一点可以看出，必须立即采取严厉措施来制定污染问题的相关纠正措施。
“Despite 40 years of building ever-cleaner vehicles, we still have a vehicle pollution problem in this country, ” Mr. Kassel said.
“尽管40年来，我们一直在开发更清洁的车辆，国内的汽车污染问题仍然很严重，”卡塞尔先生承认。
"Marine animals release small amounts of urea, but the pollution problem is almost entirely human caused," says Kudela.
库德拉认为海洋动物排泄的尿素很少，污染问题几乎都是人类造成的。
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