The library is all on one level.

　　圖書(shū)館全部在同一層樓上。

　　Each was a composite of three scoops of silt.

　　每個(gè)樣品由三樣勺河床淤泥組成。

　　Put a small amount of the powder into a container and mix with water

　　把少量粉末放入容器，加水混合。

　　The wood turns to powder in his fingers.

　　木頭在他指間會(huì)變成粉末。