thin: implies comparatively little extension between surfaces or in diameter: a ~ wire; or it may suggest lack of substance, richness, or abundance: soup that was ~ and tasteless.      （abundant充沛富饶implies great and rich supply,如has surprisingly abundant energy for a woman of her age对于她这个年龄的妇女来说，她的体力充沛得惊人）


slender: implies leanness or spareness often with grace and good proportion: the ~ legs of a Sheraton chair.  （lean和space是褒义词，表示精瘦没有多余脂肪lack of excessive fat，如来自饮食节制长期锻炼等，而上边的thin形容人一般是贬义，表示瘦弱面黄肌瘦不健康等）   (Sheraton喜来登，酒店名, 还表示18实际一种新古典主义的家具风格，以Thomas Sheraton命名an 18th-century neoclassical furniture style, so called after Thomas Sheraton，这种家具的框架都是直角，腿是圆形，从上往下逐渐变细，所以例句中说它苗条)    grace优雅是指动作控制良好有吸引力


slim: applies to a slenderness that suggests fragility or scantiness: ~ chance of success.


slight: implies smallness as well as thinness: the ~ build of a professional jockey.  build体质，强调身体的尺寸和重量，如本例


tenuous: implies extreme thinness, sheerness, or lack of substance or firmness: the sword hung by a few ~ threads.  （sheer织物等又薄又轻几乎透明的applies to a fabric that is thin, light and almost transparent，如sheer nylon轻薄的尼龙）
  

thin瘦、细: 指表面间距小或圆形直径小， 或表示缺乏实质不丰富不充沛，slender苗条: 表示精瘦并且优雅比例协调，slim苗条: 也表示苗条但暗示瘦弱或欠缺，slight瘦小: 表示既瘦又小，tenuous纤细: 指极端细小轻薄，缺乏实质不结实


记忆方法: 1）首字母2T3S想成太瘦<==瘦小

         2）瘦小的不宽厚丰沛mean not thick, broad, abundant, or dense.