专题01线段的中点模型【理论基础】如图，已知点M是线段AB的中点→AM=BM=AB●AMB【模型变式1】双中点求和型如图已知点M是线段AB上任意一点，点C是AM的中点，点D是BM的中点→CD=AB●●AMDB【证明...

bad /baed/释义adj.worse,worst of low quality,or notacceptable劣质的，很差的；不可接受的例句The plumber did a bad job on the repairs.not (too)bad释义satisfactory令人满意的例句That's...