puzzle over
短语苦苦思考
词形变化
puzzled over
puzzles over
三单
puzzles over
puzzling over
puzzling over
现在分词
puzzled over
过去式
puzzled over
过去分词
释义与例句
v.
-
1.
To think intensely and deeply about a confusing problem, situation, or question in an effort to understand it or to find a solution.
习语 非正式