不塞不流不止不行: there is no flowing without damming and no motion without rest
发现: find; discover 短语和例子发现一些线索 find some clues; 发现问题, 解决问题 discover problems and solve them; 发现敌炮艇一艘 spot an enemy gunboat; 划时代的发现 an epoch-making discovery; 考古学上的一项重要发现 an important archaeolo
