Life is like a river; without encountering reefs, it is difficult to create beautiful splashes.
人生就像一条河流，不遇到礁石，就很难激起美丽的浪花。
该句使用了明喻修辞手法，将人生比作河流，形象地说明了挑战对于成就精彩人生的重要性。
"Setbacks and failures are inevitable in life."
"However, her excitement was quickly replaced by a sense of defeat."
"Setbacks are actually the tuition paid to advance toward success."
"Setbacks are actually the tuition fee to be paid on the way to success."
"Losing a piece represents encountering a setback in life."