And I began to feel such pain again." Lena Horne had a rich, raw,deep voice that was famous for blues singing.

VOA: special.2010.05.14

A life, a fulfilling life, a rich life includes ups and downs, includes pain and getting up again, includes failure and getting up again.

生活，令人满意的生活，丰富的生活包括了起起落落，包括了痛苦和再次振作，包括了失败和再次奋斗。

哈佛公开课 - 幸福课课程节选

It turns out that blood within the umbilical cord is also a rich source of stem cells and again specific to a particular patient.

研究发现脐带血中,也有丰富的干细胞资源,并且对一些特殊的病人有特别的意义

耶鲁公开课 - 生物医学工程探索课程节选