n.硅酸盐沉着病;矽肺病
“What's the longest word in the world besides pneumonoultramicroscopicsilicovolcanoconiosis? 听说越南的劳动力更廉价.
“What's the longest word in the world besides pneumonoultramicroscopicsilicovolcanoconiosis?” (除了“矽肺病”之外,世界上最长的单词是什么?)