v. move or swing back and forth
v. exhibit aggressively
vt. 挥, 挥舞
n. 挥舞
1. He brandished his sword to scare off the intruders.
他挥舞着剑以吓跑入侵者。
2. The teacher asked the student to brandish his project in front of the class.
老师让学生在班上展示他的项目。
3. She brandished her umbrella to keep the rain away.
她挥舞着雨伞以挡住雨水。