noun 下载 🔗分享 金属煅烧物, 氧化金属。 The substance which remains after a metal or mineral has been thoroughly burnt, once seen as being the essential substance left after the expulsion of phlogiston, but now recognised as being the metallic oxide (or, in some cases, the metal in a state of sublimation). Examples : "The alchemist, after heating the copper ore for hours, examined the reddish-brown calx remaining in the crucible. " 那位炼金术士将铜矿石加热数小时后，检查了坩埚中剩下的红褐色金属煅烧物，也就是氧化铜。 chemistry substance material mineral science 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 墙赛得分区 In the Eton College wall game, an area at the end of the field where a shy can be scored by lifting the ball against the wall with one's foot. Examples : "The team successfully scored a shy by kicking the ball against the calx. " 队伍成功地把球踢到墙赛得分区，得了一分。 sport game area place 与AI对话词汇游戏阅读练习
