copper 音标：['kɔpə]
n.铜，铜币，有紫铜色翅膀的小蝴蝶，警官
记忆法
与 copper 相关的例句
1、These kettles are all copper.这些“水壶”全是铜的。
2、At room temperature，the thermal conductivity of a diamond is about six times higher than that of a piece of copper.在室温下，钻石的热传导律比铜块高六倍左右。
3、Copper and tin are common minerals.铜和锡为常见矿物。
