就是明明你自己错了，倒反过来说是我错了。
It means that it's clearly your fault, but you intentionally blame me for it.
他说他有病，结果我们倒反而费了不少时间去照料他。
He said he was sick and we spent more time taking care of him than he of us.
酰化反应用DMAP作催化剂，采用向碎冰上倾倒反应液使产物析出的后处理方法，收率82.8%；
DMAP as catalyst, the postprocessing steps were simplified with the method of pouring the reaction solution into ice, the yield was 82.8%;
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