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地软如此珍贵，因此在市面上就越来越稀少难找，也逐渐成为了一种“奢侈品”一般难得清洗，一斤都要卖十来二十块钱甚至更贵，这样算下来一斤二十块钱拿下来的地板价格可能等同于牛肉价了，但其实并不仅仅是因为价格贵导致我们不常见，更主要的是因为清洗麻烦。

Iron can thus switch between different crystal lattices. There is, for example, a face-centered cubic (FCC) arrangement, which experts call “austenite.” In this case, the iron atoms sit on the corners ...