The trees with small change ranges possess strong anti-pollution ability and the trees with big change ranges possess weak anti-pollution ability.
变化幅度小的树种抗石化污染的能力强，变化幅度大的抗污染能力弱。
The trees with small change ranges possess strong anti-pollution ability and the trees with big change ranges possess weak anti-pollution ability.
变化幅度小的树种抗石化污染的能力强，变化幅度大的抗污染能力弱。
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