nutrition concentration的用法和樣例：
例句
- By Colleen Hurley, RD, Certified Kids Nutrition Specialist Iron is one of the most important nutrients in an infants diet.
科林赫爾利，已獲認證的兒童營(yíng)養專(zhuān)家，在嬰兒飲食中，鐵是最重要的營(yíng)養物質(zhì)之一。 - Phytoplankton growth is the key factor controlling the concentration of nutrient and carbon cycling in the surface sea water.
浮游植物生長(cháng)是影響表層海水中營(yíng)養物質(zhì)濃度和碳循環(huán)的關(guān)鍵因素。
