a burgundy leather briefcase的用法和样例：
- He carried a leather briefcase embossed with his initials.
- Billy: And look, a leather briefcase!
- He carried leather briefcase embossed with his initials.
- He always carried leather briefcase under his arm, and a knobby, gleaming black walling-stick in his hand.
- I filled my leather briefcase with beer and cold packs, put on my best power suit and hit the bars.