The rediscovery of the 85,000 samples, about a quarter of the total collected, has spurred a new effort to study the link between early childhood exposure and health problems in later life.
000个样品（大概是收集来的全部样品的四分之一）的新发现，引发了人们重新研究婴儿接触放射物与他们以后的生活健康的联系。
About the usual time; it may be a quarter of an hour later.
跟平时差不多；也许晚了约莫半个小时。
"Well," says his uncle, "Now it is a quarter to two." Three hours later we are going to visit your family. Go and tell her about it, for I'm too busy.
“好吧，”他叔叔说，“现在是差一刻钟两点，去告诉你妈妈，三个小时后我们将来你家，因为我太忙了，我必须快点走…”。
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