女生长头发的英文表达方式有以下几种：
long hair：这是最常用的表达方式，例如：
She has long hair. (她有长长的头发。)
I love girls with long hair. (我喜欢长头发的女生。)
flowing hair：这是指头发流畅地垂下来，例如：
She has flowing hair that reaches down to her waist. (她有流畅的头发，垂到腰间。)
He was mesmerized by her flowing hair in the wind. (他被她在风中飘动的头发迷住了。)
cascading hair：这是指头发像瀑布般垂下来，例如：
She has cascading hair that falls down her back. (她有像瀑布般垂下来的头发。)
The princess had cascading hair that was the envy of all the other ladies at court. (公主有像瀑布般垂下来的头发，让宫廷里所有的女人都羡慕不已。)
tresses：这是指女性的头发，例如：
She has beautiful tresses that are a deep shade of brown. (她有一头深棕色的美丽头发。)
He ran his fingers through her tresses and she closed her eyes with a sigh. (他把手指插进她的头发里，她闭上眼睛，发出一声叹息。)
这些表达方式来源于英语中对头发的描述。long hair指的是长长的头发，flowing hair指的是流畅的头发，cascading hair指的是像瀑布般垂下来的头发，tresses指的是女性的头发。
long hair：这是最常用的表达方式，例如：
She has long hair. (她有长长的头发。)
I love girls with long hair. (我喜欢长头发的女生。)
flowing hair：这是指头发流畅地垂下来，例如：
She has flowing hair that reaches down to her waist. (她有流畅的头发，垂到腰间。)
He was mesmerized by her flowing hair in the wind. (他被她在风中飘动的头发迷住了。)
cascading hair：这是指头发像瀑布般垂下来，例如：
She has cascading hair that falls down her back. (她有像瀑布般垂下来的头发。)
The princess had cascading hair that was the envy of all the other ladies at court. (公主有像瀑布般垂下来的头发，让宫廷里所有的女人都羡慕不已。)
tresses：这是指女性的头发，例如：
She has beautiful tresses that are a deep shade of brown. (她有一头深棕色的美丽头发。)
He ran his fingers through her tresses and she closed her eyes with a sigh. (他把手指插进她的头发里，她闭上眼睛，发出一声叹息。)
这些表达方式来源于英语中对头发的描述。long hair指的是长长的头发，flowing hair指的是流畅的头发，cascading hair指的是像瀑布般垂下来的头发，tresses指的是女性的头发。