句子采用并列结构对比青年与老年的状态，后半句使用双重否定强调珍惜时间的必要性，语气恳切。
The white day passes like an arrow; the wise cherish the sun of today.
Youth is easy to learn but old age is hard to achieve; not a single inch of time should be taken lightly.
Today's business must be finished today; never let it drag on until tomorrow.
Time is the capital of intellectual laborers.
The golden age lies before us, not behind us.
Hair has turned the color of frost, while time races on like a stream.
Patience and time are often more effective than force and anger.
Capturing every real minute is better than an imagined year.
A moment of time is as precious as a thousand pieces of gold.
白日去如箭，达者惜今阳。
少年易学老难成，一寸光阴不可轻。
今日事须今日毕，切勿拖延到明天。
时间是脑力劳动者的资本。
黄金时代是在我们的前面，而不在我们的后面。
鬓毛霜一色，光阴水争流。
忍耐和时间，往往比力量和愤怒更有效。
抓住现实的每一分钟，胜过想象中的一年。
时间一分，贵如千金。