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VOA慢速英语:China-Japan Dispute Shines Light on Rare Earth Metals
2010-10-08来源:和谐英语
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例句:They are mining for coal.
他们在开采煤矿。
They'd mined the hillside for the ores.
他们曾在这个小山坡上开采矿石。
2.periodic adj.周期的; 定期的, 定期发生的,间发性的
例句:Long long ago, we knew the periodic motion of a planet.
很久以前, 我们就知道行星的周期运动。
3.property n.性质, 特性, 性能
例句:These plants have medicinal properties.
这些植物具有药物效用。
Oil has the property of floating on water.
油有浮在水上的特性。
4.refine vt.精炼; 精制; 使纯净
例句:They refine sugar using this way.
他们用这种方法精制糖。
5.lightweight adj.轻量的,薄型的
例句:These garden shears are lightweight and easy to use.
这些园丁剪刀又轻又好用。
6.speed vt.vi.急行; 加速
例句:He sped his car through the street.
他开车飞速地穿过街道。
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