维尔博尔德说：“我们还要测量更古老的样品来观察地幔可能是怎样随时间而变化的。”
"We want to measure more ancient samples to see how the mantle might have changed over time," Willbold said.
维尔博尔德和他的同事们集中研究了古代格陵兰岩石里钨的同位素，它们同黄金一样，也具有粘接铁的吸引力。
Willbold and his colleagues concentrated on investigating the ancient Greenland rocks for isotopes of tungsten, a metal that, like gold, has an affinity for bonding with iron.
依政客所见，阿奇博尔德·韦维尔有致命之缺陷。
IN THE eyes of politicians, Archibald Wavell had fatal flaws.
依政客所见，阿奇博尔德·韦维尔有致命之缺陷。
IN THE eyes of politicians, Archibald Wavell had fatal flaws.
应用推荐