Most sand is made of quartz, a hard silicon crystal.

VOA: special.2010.01.04

Bishop's sandpiper poet, there in your handout, is obsessed with the mere details of experience, those sand grains, quartz grains.

毕肖普写鹬的那首诗，你们的讲稿上有，被零星的描写经验的细节所累，描写了那些谷物和石英岩。

耶鲁公开课 - 现代诗歌课程节选