叙述了这类共聚物的合成方法和主要反应。
The synthesis and main reactions of the copolymer have been described.
目前，气候变化的影响主要反应在自然生态系统上。
At the moment, the impact of all this change can be seen mostly on natural systems.
置换反应是中学化学中的主要反应，也是典型的氧化还原反应。
Metathesis reaction is not only one of the major reactions in secondary school chemistry teaching, but a typical REDOX reaction.
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