一种气体的密度the density of a gas有些密度大的物质容易让电流通过.Some dense substances allow electricity to flow through them freely.水银的密度比水大得多.Mercury has a much greater density than water....
碎砖石可以用来铺路基和庭院地基。Brick rubble is useful as the base for paths and patios.天花板坍塌了,碎砖破瓦掉落到了屋里.The ceiling collapsed and rubble poured into the room.一些人从碎砖烂瓦中被救出.Some people were dug out of the rubble....
From the researcher's experience, a number of collaborations among teachers are met.笔者的研究经历来说, 对学校实践层面,接触的教师合作现象,也比较多.In the most successful collaborations , both co - authorsfrom the experience.在绝大部分的成功合作中, 双方都可以从中...
The practical value of knowledge resources possesses popularity , duality of exhaustiveness and non exhaustiveness, and expansivity.知识资源的使用价值具有广普性、非耗竭与耗竭二重性及扩张性....