a pound of flesh的用法和样例：
- You may have a pound of Antonio's flesh.
- Now, you may cut out a pound of flesh from Antonio's breast,@ said Portia to Shylock.
- According to the law, Shylock may have a pound of flesh to be cut off by him nearest to Antonio's heart.
- Shylock sets a condition that should Bassanio be unable to pay back his debt on time, he will cut a pound of flesh from Antonio.
- He weighed out a pound of tomatoes.