...人的任务"测试中,页面中会有一个成果面板,上面显现了几个小精灵在任务(elves working),他们共搜集了几圣诞礼物(presents packed),这些小精灵每分钟搜集的礼物数目(presents per minute),在小精灵们搜集礼物时你还可以听到圣诞老人"哈哈"的笑声。
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This paper discusses fluid mechanics performance of packed tower with baffle, describes cases of experiment and presents computational equation for pressure drop drop and flooding velocity.
本文对带折流板式填料塔的流体力学性能进行了探讨，介绍了实验情况，提出了压降和泛点气速的计算式。
Yesterday was my birthday and I received a lot of presents. These presents were packed in coloured paper and two of them were funny and interesting, which impressed me.
昨天是我的生日，我收到了很多礼物。它们用彩纸包着，其中有两件有趣的东西。
And the holidays are a particularly infectious time of year, with planes packed full of families with all their presents and all those germs.
尤其是各种假期，往往成为一年当中最容易被传染疾病的时间段，飞机上到处是举家出游的人们，而与他们同行的，还有各种各样的病菌。
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