数据审查是大多数杂志的薄弱环节，而这会损害出版物的质量。
Most journals are weak in statistical review, and this damages the quality of what they publish.
某种非常有效的除草剂对玉米来说是安全的，但即使是除草剂的残留物也会对大豆造成损害，该残留物在施用除草剂一年多后仍残留在土壤中。
One very effective herbicide is safe for corn, but soybeans are damaged even by the herbicide's residue, which remains in the soil more than a year after the herbicide is applied.
持久性有机污染物造成神经损害、免疫系统紊乱、癌症以及许多其他健康问题，因此是一种严重的环境问题。
POPs are a major environmental concern due to neurological damage, immune system disorders, cancer and a host of other health problems they cause.
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