“修长的”的英语可以翻译为：slender ...

她是个身材修长的年轻女子。She was a young woman, fairly tall and fairly slim.他那修长的身材给人以深刻印象.His tall and spare frame cut an impressive figure.裙子下面露出两条修长的腿,十分好看.Her slim legs came out from under the hem looking just fine....