单词:high voltage test
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Why Some People Are Poor The poverty line is the minimum income that people need for an acceptable standard of living.People with incomes below the poverty line are consisdered poor. As the general standard of living rises,the poverty line does,too.T
STACEY VANEK SMITH, HOST: Marijuana is now legal in almost 30 states. But even in those states, it is still illegal to drive while impaired by the drug. But as NPR's Rae Ellen Bichell reports, that's left law enforcement and scientists struggling to
It must work without a hitch. 必须能够无故障运行。 It must work without a hitch. 必须能够无故障运行。 It has been tested for nine times. 我们已经对其进行了九次测试。 These elements seem to be working well under high
HEALTH REPORT – December 4, 2002: Test Warns of Heart Attack Risk By Jerilyn Watson This is the VOA Special English Health Report. Since the nineteen-fifties, American doctors have tested their pati
China has long depended on coal-burning power plants to fuel its explosive growth over the past three decades. As a result, air pollution has risen to alarming levels in central and eastern regions. Policymakers have been working hard to shift the co
Bird on a Wire 当我们行走在马路上时,经常可以看到成群的麻雀或乌鸦停落在几万伏的高压电线上,它们不仅不会触电,而且一个个显得悠闲自得。可是,你也知道,如果有人不小心碰到高压线