uranium-lead age method 铀铅年龄测定法
ore-lead age [地质] 矿铅年龄
thorium-lead age method 钍铅年代测定法 ; 钍铅测年法
thorium-lead age 钍铅法测定的年龄
Age of Lead 铅华岁月
lead-uranium age method 铅铀年龄测定法
lead-isotope age 铅同位素年龄
lead method of age determination 铅法地质年龄测定
Certain features of these engravings lead to the conclusion that they are of great age—geological changes had clearly happened after the designs had been made.
这些雕刻的某些特征让人得出它们年代久远的结论——这些设计完成之后显然有地质变化发生。
Today we report about two scientists, J.Robert Oppenheimer and Enrico Fermi, who helped lead the world into the nuclear age.
VOA: special.2009.06.14
He ended up at City University of New York, became a full professor at age thirty three, died in his early '50s, did not lead a good life but had extraordinary discoveries.
最后他去了纽约市立大学,在33岁时成为正教授,50来岁时去世,生活过得不是很好,但有很重大的发现。
B'Tselem says 773 of an estimated more than 1,300 people killed in the offensive, dubbed Operation Cast Lead, were civilians, including 320 children under the age of 18.
VOA: standard.2009.09.09
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