| 单词 | cotyledon |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔dicotyledon〕A flowering plant with two embryonic seed leaves or cotyledons that usually appear at germination.双子叶植物：具有两片胚籽的或通常在萌芽上有双子叶的花卉植物美国传统〔epicotyl〕The stem of a seedling or an embryo located between the cotyledons and the first true leaves.上胚轴：位于子叶和最早的真叶之间的籽苗或胚芽的茎美国传统〔epigeal〕Botany Of or relating to the emergence of cotyledons above the surface of the ground after germination.【植物学】 生长或出现在地表或接近地表的地方：发芽后子叶露出地表的美国传统〔hypocotyl〕The part of the axis of a plant embryo or seedling plant that is below the cotyledons.（下）胚轴：低于胚轴的一个植物胚胎或根的轴的一部分美国传统〔hypogeal〕Botany Of or relating to seed germination in which the cotyledons remain below the surface of the ground.【植物学】 地下生的，地下产生子叶的：种子萌芽的，或与之有关的，在这种萌芽里胚胎保留在地表面以下美国传统〔monocotyledon〕Any of various flowering plants, such as grasses, orchids, and lilies, having a single cotyledon in the seed.单子叶植物：任一种种子只含一个子叶的植物的开花植物，如草、兰花和百合花美国传统〔polycotyledon〕A plant whose seed contains more than two cotyledons.多子叶植物：种子含有两片以上子叶的一种植物美国传统〔scutellum〕Botany Any of several shield-shaped structures, such as the cotyledon of a grass.【植物学】 盾状结构：一种似盾牌形状的结构，例如一种草的子叶美国传统 |
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