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.
青岛的城市是建在小山坡上的，车开在狭小而干净的山间街道上，一会上升，一会下沉，一会是九十度的转弯。
Qingdao city is built on the hills, he drove in a small mountain and clean streets, one will rise for a sink, one will be turning ninety degrees.
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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