She called on Eritrea to clarify the whereabouts of 11 MPs who disappeared without a trace in September,2001.

VOA: standard.2009.04.09

There's an orgasmic element in what Derrida has in mind, so that when he speaks of "the seminal adventure of the trace," toward the end of your essay, you want to put some pressure on that word "seminal."

在德里达的思想中有一种兴奋的元素，所以当他在文章结尾处“,说到，“有创意的追溯之旅“时，大家想要将重点放在，“有创意的“上“

耶鲁公开课 - 文学理论导论课程节选

Over the past few decades,however, scientists have determined that even trace amounts of lead in children's bodies leads to long-term neurological and behavioral problems.

VOA: standard.2009.12.19

At the same hearing, he says in one of the best studies used molecular fingerprinting to follow an outbreak of drug-resistant bacteria: "You actually can trace the specific bacteria around and they find that the resistant strains in humans match the resistant strains in the animals."

VOA: standard.2010.07.21