单词red-mercury
网络: 红色水银；红汞；红水银
The Singer sewing machines (see photo) are said to contain traces of red mercury, a substance that may not exist.
沙特人相信，这些缝纫机里含有红汞成分，这是一种可能根本不存在的物质。
People believe they can use their mobile phones to test if the machines contain red mercury.
人们相信用手机可以测出缝纫机里是否有红水银。