a bulletproof limousine的用法和样例：
- To protect himself, Ruiz used to wear a bulletproof vest under his suit jacket, but the vest was bulky and hot.
- A limousine carried us to the museum.
- In his room, Luca unlocked the trunk beneath the bed and took out a bulletproof vest.
- Right now, governments are interested in stitching taxpayers a bulletproof vest.