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| persistence of pesticides The ability of a chemical to retain its molecular integrity and hence its physical, chemical, and functional characteristics in the environment through which such a chemical may be transported and distributed for a considerable period of time (具备这种能力的化学物质，能保持其分子完整性的物理、化学和功能特点。在环境中，这样的化学物质可能被保持一段时间。) | |||
| 有机 污染物的持久性: 4 phrases in 1 subject |
| United Nations | 4 |
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