prethin

例句：

1. 1.She is prethin and has a great figure.
   她苗条，身材很好。
2. 2.The prethin dress fits her perfectly.
   这件瘦小的衣服非常适合她。
3. 3. He is prethin and has a good metabolism.
   他瘦小而且新陈代谢良好。