Innovation in fishing technology should focus on reducing bycatch, not just increasing catches.
渔业技术创新应专注于减少误捕，而不仅仅是增加捕获量。
Mathematics is the key to understanding the universe.
——杜先生晚年在香港，先生为中国抗战.赈灾慈善做出巨大贡献，晚年依旧气度过人，毁掉所有欠条。