v. make bulletproof
s. not penetrable by bullets
a. 防弹的
1. The police wear bulletproof vests for their safety.
警察穿防弹背心以保护他们的安全。
2. She bought a bulletproof backpack for her child's school.
她为孩子的学校买了一个防弹书包。
3. The car has bulletproof windows to protect the passengers.
这辆车有防弹窗户，以保护乘客。