In English, "long hair" is the correct way to express the concept of having hair that is long in length. The adjective "long" refers to the length of the hair, while "hair" denotes the natural growth of protein filaments that cover the scalp. Therefore, when referring to someone or describing oneself as having long hair, one can simply say "I have long hair" or "She has long hair."
除此之外,还有:
长头发在英语中的表达是"long hair"。其中,"long"表示长的状态或程度,而"hair"则是头发的意思。所以,长头发的英语表达就是"long hair"。