我们很高兴地得知化工厂的事故没有对环境造成危害。
We are very glad to hear that the incident in the chemical plant poses no threat to the environment.
已使用过的电池进行收集，防止其进入生态系统，对环境造成危害的一种行为。
Already used batteries are collected, prevent the ecosystem, environmental harm of a kind of behavior.
然而该报告也强调，在转基因食品销售之前必须继续进行安全评估，以预防对人类健康和环境造成危害。
However the report also stresses the need for continued safety assessments on GM before they are marketed, to prevent risks to both human health and the environment.
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