角化过的

例句：

1. 1.harden, harden up, harden over, harden in, harden out, harden off, harden up to, harden into,harden down, harden on,harden through, harden by,harden with, harden under,harden against, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over,harden over, harden over"例句：1. The oldtree has been acorn-hardenedfor centuries.
   这棵老树已经几百年没有开花了。
2. 2. She's beenworking so diligently that herhands are calloused and toughenedfrom the work.
   她工作非常勤奋，手上都磨出了茧子和硬皮。
3. 3. The car was so worn out thatit had become a kind of armor forthe driver to protect him from the impacts of the road.
   那辆车磨损得很厉害，成了司机用来保护他免受道路冲击的一种装甲。