ectomorph

noun

1. 外胚层体型（偏于颀长）
   a person whose natural body shape is thin

1. The majority of boys was in mesomorph and ectomorph.
   男孩大多属中、外胚层体型；
2. The mesomorph may not need as much protein as an ectomorph because an ectomorph's body is probably burning more protein as energy than the mesomprph.
   “中型体质者”比“瘦型体质者”需要的蛋白质量要少，因为“瘦型体质者”可能会分解更多的蛋白质来提供能量。
3. The frequency changes of somatotype indicated that the somatotype distribution of Han boys in western country area of Liaoning province was mainly endomorph type and ectomorph type, while the one of girls was centralized in endomorph type.
   体型频数的变化提示辽西农村汉族男生体型分布在内胚层和外胚层的体型较多，女生分布较集中，主要在内胚层体型。

noun

1. a person with a thin body