NO. WORD POS EHOWNET
1 百思不得其解 VH11 {ignorant|不知:concession={think|思考:frequency={again|再}}}
2 百思不解 VK1 {ignorant|不知:concession={think|思考:frequency={again|再}}}
3 百思莫解 VI1 {ignorant|不知:concession={think|思考:frequency={again|再}}}