a tin ear的用法和样例：
- Business has a tin ear for language.
- He also likes to sing karaoke, but he also has a tin ear.
- Paul has a tin ear,so he keeps still when the rest of the class sings.
- Despite an over-reliance on stock footage, a tin ear for dialogue, and a fondness for wacky, exploitative horror and sci-fi fare, Wood wiggles his way into B-moviedom.
- A small boy was beating out a tune on a tin can.
a tin ear的相关资料：