Alexander chronicles those experiences in his book,"52 Loaves: One Man's Relentless Pursuit of Truth, Meaning and a Perfect Crust."

VOA: standard.2010.07.16

There is a relentless seeking sense that's at the heart of this work.

这项任务的要害是去不断地寻找。

耶鲁公开课 - 1945年后的美国小说课程节选

Aid groups say 23 million people face starvation in East Africa because of a relentless drought some scientists say may be a result of climate change.

VOA: standard.2009.11.04