在这种情况下，铀铅定年法被用来确定样本中一半的砂岩是在阿巴拉契亚山脉花岗岩形成的同时形成的。
In this case, Uranium-Lead Dating was used to establish that half of the sandstone in the samples was formed at the same time the granite in the Appalachian Mountains was formed.
然而，在一半的试验中，这些是未被选择的果酱或茶的样本。
On half of the trials, however, these were samples of the non-chosen jam or tea.
J女士的样本有一半是单身，一半已婚。白人压倒性的占绝大多数(93%)。
Half of J.M. 's clients were single, half married. They were overwhelmingly white (93 percent).
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