| 释义 |
nutrition concentration
基本例句
营养物质
By Colleen Hurley, RD, Certified Kids Nutrition Specialist Iron is one of the most important nutrients in an infants diet.科林赫尔利，已获认证的儿童营养专家，在婴儿饮食中，铁是最重要的营养物质之一。
Phytoplankton growth is the key factor controlling the concentration of nutrient and carbon cycling in the surface sea water.浮游植物生长是影响表层海水中营养物质浓度和碳循环的关键因素。 |