With the first ever high-level meeting on water and sanitation taking place in Washington in April, WaterAid is working to ensure the need for both these basic human rights remains high on the agenda.

4月美国华盛顿的迄今最高级别的水和卫生设施会议上，水援助组织将会努力保证这两项人类的基本权利能够继续被优先得到考虑。

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To perform reception duties and ensure all the fitness facilities including the water level and temperature of the swimming pool are maintained in the best working and hygienic condition.

负责接待客人保证所有的健身设备运作正常及干净清洁包括游泳池的水压、水温等。

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This paper introduces the working principles of an electronic double-water level alarm and the designing calculation of its related parameter selection.

介绍了一种电子式双水位报警器的结构及工作原理，并对其有关参数的选定进行了设计计算。

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