球面对称分布；球面对称分配

VOA常速英语2013--粮食援助分配在中非受阻

Food Aid Distribution Difficult in CAR 粮食援助分配在中非受阻 The World Food Program says it will scale-up its emergency operations in Central African Republic to provide aid to more than one-million people over the next sixmonths. 世界粮

发表于:2018-11-29 / 阅读(251) / 评论(0)

VOA常速英语2013年(十二月)

SSS 2011-08-04

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a minute? The carbon molecule known as a buckyball, a member of the fullerene family, can act as a cage for a variety of other chemicals. And now researchers have used one to tra

发表于:2019-01-08 / 阅读(150) / 评论(0)

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货币英语 12 Avoid Early Withdrawal Penalties

By Laura Adams In this episode Ill discuss a legal way to make early withdrawals from your retirement account without having to pay an early withdrawal penalty. Can You Avoid Early Withdrawal Penalties on Retirement Accounts? When it comes to saving

发表于:2019-02-04 / 阅读(255) / 评论(0)

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VOA常速英语2013--粮食援助分配在中非受阻

SSS 2011-08-04

货币英语 12 Avoid Early Withdrawal Penalties