Ever bearers, when planted after the last winter freeze, will produce fruit during spring or early summer.

VOA: special.2009.05.19

What is the heart but a spring, ?" or reason but a means of calculating pleasures and pains."

除了跳动，心脏又为何物，除了感觉愉快和痛苦，人为什么而活“

耶鲁公开课 - 政治哲学导论课程节选

It is a feeling of restlessness or excitement brought on by the coming of spring.

VOA: special.2010.03.15