a man should be independent [steadfast] at the age of thirty.; at thirty, a man should be able to think for himself
Example Sentences:
1.
Time flies and the museum is now about to provide its 30th year of service 转眼间，博物馆又迈向三十而立之年！
2.
Thank you from the bottom of our hearts , and we will certainly see you all again next year for the 30 - year anniversary of the hkiff 真的要谢谢你们，并请与我们一起，迎接明年已届三十而立之年的电影节。
3.
Finally , may i wish that the museum , now moving into its fourth decade , will become even more mature and ready for greater challenges in the 21 最后，在此谨祝历史博物馆在三十而立后会更趋成熟，更能迎接21世纪的挑战。
4.
At forty i no longer suffered from perplexities . " it could be interpreted that one cannot be free from perplexities and earthly troubles without soul searching for another ten years even if success is already in hand 孔夫子说"三十而立，四十而不惑" ；可以理解为成功之后，还须求索十年，方能达到无惑的境界。
