This is the 4238th most frequent Chinese word.
头发
Hair.
In this sentence, '头发' refers to the physical attribute of hair, emphasizing its length.
我的头发很长。
My hair is very long.
'头发' is used here to specify the subject treated with dyeing, providing focus on the change of its color.
他的头发染成了红色。
His hair is dyed red.
In this sentence, '头发' indicates the object of action, specifically the act of brushing, which is a common daily activity related to hair care.