1. He is fast becoming a personage.
   他很快成为名人。
2. He cannot understand even fast-food literature.
   他甚至连通俗读物都读不懂
3. He seems to be fast asleep.
   他好像睡得很熟。
4. She learnt so fast that she outlearnt her teacher.
   她学得很快以致于在学识上超过了她的老师。
5. The eagle's large wings enable it to fly very fast.
   鹰的巨大翅膀使它能飞得很快。

　1个名词解释