The bow hair is adjusted so it is slightly loose, tension is provided by the fingers of the right hand.

弓毛调整得稍微有点松懈，弓毛的松紧由右手的手指控制。

youdao

Her hair was tied back in a neat bow.

她的头发扎在脑后打了个整齐的蝴蝶结。

《牛津词典》

Let children display objects they make or find: "What do you like about this hair bow?"

让孩子们陈列他们制作或找到的物品：“你觉得这个发结怎么样？”

youdao

The bow is made out of, typically, horse hair from the tails of horses.

大多是用马尾的马鬃制成

耶鲁公开课 - 聆听音乐课程节选

There may be 150 to 200 strands of hair in the hank of hair that's put on a bow but, Renee, you replace the hair every six months, every year, every three months, whatever you like.

NPR: The Importance of the Bow

He cut his hair, began wearing suits, bow ties, better shoes and coats.

WSJ: Carmelo Anthony's Slam Dunk