The word pajama came into English two hundred years ago and before that time it was pretty well universal for English speaking people to go to bed either in night dresses or night shirts.

pajama这个词在200年前进入英语，在那之前，英语国家的人几乎都是穿着睡衣（night dress或night shirt）上床睡觉的。

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In general, the coal reflected waves were suited to universal law of that from thin bed.

在一般情况下，煤层反射波应满足于薄层反射的一般规律。

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The quick change between flat bed and cylinder arm applications guarantees universal use.

快速转换平板和筒形横臂的应用，确保了用途广泛。

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Partnerships with national governments and development partners, including, the Global Fund to Fight AIDS, Tuberculosis and Malaria, the World Bank Booster Program for Malaria Control, the Bill and Melinda Gates Foundation, and the UN Envoy for Malaria, which has mobilized thousands of partners with the goal of reaching the universal coverage of long lasting insecticide treated bed-nets by the end of this year, have made these successes possible.

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