1 to become quicker or make sth quicker 加快:
She felt her heartbeat quicken as he approached.她见他走过来,觉得心跳加快了。He quickened his pace to catch up with them.他加快步子要赶上他们。
2 (written 书面语) to become more active; to make sth more active (使)变得更活跃:
His interest quickened as he heard more about the plan.他听到计划的更详细内容时兴趣更浓了。