backsetWiktionary 原文英美n.挫折，倒退，逆流，涡流中文释义来自 ECDICT构词拆解backback词干setset词干词源说明From back + set.释义名词noun1A check; a relapse; a discouragement; a setback.2Whatever is thrown back in its course, such as water.动词verb1US, especially Western USTo plow again in the fall; said of prairie land broken up in the