outer covering of the seed的意思|示意
美 / ˈautə ˈkʌvərɪŋ ɔv ðə si:d /
英 / ˈaʊtɚ ˈkʌvərɪŋ ʌv ði sid /
种子外层
outer covering of the seed相关例句
The seed has an outer coating that surrounds the genetic material of the new plant, and inside this covering is a concentrated supply of nutrients.
种子有一层外壳，包裹着新植物的遗传物质，外壳内部是集中的营养供应。