a gesture of greeting or elation; one person's upraised palm slaps the upraised palm of another person
双语例句
1
He high-fived you when you got an A on a test, and encouraged you when you failed.
当你考试得了 A 时，他与你击掌，当你失败时，他鼓励你。
2
She said over the loudspeaker. They high-fived each other and left the office.
她对着扩音器说完就离开了办公室。
3
When the doors finally opened, they hysterically "high-fived" and cheered hundreds of delirious customers flooding in through the doors for hours on end.