他们需要在试睡之后，拍下视频和照片来展示酒店的环境设施，而且要针对干净度、安全性、温度、舒适度及服务写出相应的经验贴以供消费者参考。

They need to take videos and pictures to record the situation of its facilities, and take notes about its cleanness, safety, temperature, comfortableness and service.

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如砂石不干净(泥含量较大)、砂的细度模数过高或过低等，也会使混凝土强度降低、泌水性增加。

Such as sand not clean (mud high content), sand the fineness modulus too high or too low, also can make the strength of concrete is reduced, and the water increased.

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将窗户周围也彻底擦干净是一个明智的决定，因为图案会下滑，还要适应合适的同轴度。

It's smart to wipe down the area surrounding the window too since the graphics will be slid around and adjusted for proper alignment.

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