水是含有氢元素和氧元素的化合物.Water is a compound containing the elements hydrogen and oxygen.一切物质都是由一些各不相同被称为 “ 元素 ” 的简单物质构成的.All materials are made from different simple substances called " elements ".各种不同元素的原子中包含有不同数目的电子.The atoms ...
They sat at a Formica table cluttered with dirty tea cups.他们坐在铺有福米加塑料贴面的餐桌前，桌上凌乱地堆着用过的茶杯。She ushered her callers into a cluttered living-room.她把来人领进凌乱不堪的客厅。The vehicles cluttered up the car park.各种车辆把停车场塞得满满当当。...