这些租约附带了细致的条款，以减轻对北极熊等物种的任何可能的环境伤害。
The leases come with painstaking stipulations to mitigate any possible environmental harm to species like the polar bear.
植物通过长期进化逐渐形成特定的机制来抵御外界环境造成的胁迫，减轻对自身的伤害。
Plants reduce their own damage through long-term evolution to resist the external environment stress resistance.
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