Americans are deeply concerned about the relentless rise in health care costs and health insurance premiums.
出自-2016年6月閱讀原文
The novelist Edward St Aubyn has a narrator remark of the very rich that, "not having to consider affordability, their desires rambled on like unstoppable bores, relentless (持續(xù)不斷的) and whimsical（反復無常的）at the same time.