a heavy coat的用法和样例：
- Fortified against the cold by a heavy coat, he went out into the snow.
- She wore a heavy coat so as not to catch cold.
- She wore a heavy coat with nothing underneath.
- Before going outdoors, she puts on a heavy coat.
- It was cold yesterday. I should have worn a heavy coat.
- I think I need a heavier coat, too.
a heavy coat的相关资料：