a thick tree trunk的用法和样例：
- New Year's bell will be sounded, and I climbed up the top down, the little bald heads, people to the small tree trunk a thick straw, as they put on a New Year's "cotton-padded jacket .
- He hewed a canoe out of a tree trunk.
- He shored up the wall with a thick balk of wood.
- Bob bumped his head on a tree trunk and conked out.
- My father will give me a thick ear if I tell a lie.