a slice of meat的用法和样例：
- He has spread a slice of bread with Jam.
- Wang: I'd like some rice, a slice of meat, a little fish, many greens and bowl of soup.
- Give me a slice of bread please.
- A cut off the joint, is a slice from a cooked joint of meat.
- She filmed a slice of bread with butter.
- His sister, mother Jeanne, often took the best part of his repast from his bowl while he was ating,--a bit of meat, a slice of bacon, the heart of the cabbage,--to give to one of her children.