Fossilisation
化石化
??? 情景例句
I find it amazing that you can't swim.
你不會(huì)游泳可真使我大吃一驚。
His friend was filled with joy over the good news.
他的朋友因得知這個(gè)好消息而雀躍。
I usually come by bus. What about you?
我平常乘公共汽車。你呢？