?一发之差

... hide nor hair 踪影；痕迹 by a hair 一发之差 comb one's hair 申斥、责骂某人；狠揍某人 ...

?差一点儿

brown hair n (brunette or chestnut hair) 褐色的头发，棕色的头发 by a hair 差一点儿 by a hair's breadth adv (by the slightest margin) 险些，几乎，毫厘之差 ..

?差一点

... yellow hair黄头发 by a hair差一点 seize sb by the hair一把抓住某人的头发 ...