百折不挠

keep on fighting in spite of all setbacks
be undaunted by repeated setbacks
be indomitable

摆设儿, 百十, 摆事实讲道理, 百事通, 百思不解, 摆摊子, 百听不厌, 摆脱, 摆脱危机, 百万, 百万富翁, 百闻不如一见, 百无聊赖, 百无一失, 百姓, 摆样子, 百叶窗, 百叶箱, 百依百顺, 百战百胜, 摆钟, 摆子, 百足之虫死而不僵, 拜, 败, 呗, 捭, 稗, 拜把子, 败北, 败笔, 拜别, 拜倒, 拜访, 败坏, 拜会, 败火, 败绩, 败家子, 拜见,