| 单词 | 茎部 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔bark〕The tough outer covering of the woody stems and roots of trees, shrubs, and other woody plants. It includes all tissues outside the vascular cambium.树皮，茎皮：包在树、灌木和其它木本植物的根部、茎部的硬皮，包括维管形成层外的所有组织美国传统〔cupule〕A small cup-shaped structure or organ, such as the cup at the base of an acorn or one of the suckers on the feet of certain flies.杯形器具：一种小型的杯状结构或器官，如橡树果实茎部的杯状物或位于某些苍蝇脚上的吸盘之一美国传统〔gibberellin〕Any of several plant hormones, such as gibberellic acid, used to promote stem elongation.赤霉素：一种植物荷尔蒙，如赤霉酸，用来促进植物茎部生长美国传统〔grow〕Roots grow downwards from the stem.树根由茎部向下生长。外研社新世纪〔herb〕A plant whose stem does not produce woody, persistent tissue and generally dies back at the end of each growing season.草：一种茎部由非木质的、非宿存的组织组成的，一般在每段生长期末死亡的植物美国传统〔infundibulum〕The stalk of the pituitary gland.垂体的茎部美国传统〔perfoliate〕Of or relating to a sessile leaf or bract that completely clasps the stem and is apparently pierced by it.抱茎的：属于或关于完全环绕茎部并明显被茎穿过的无柄叶片或苞叶的美国传统〔pith ray〕The parenchymatous tissue that extends between the vascular bundles of a stem or root.髓射成：一种分布在茎部或根部维管束之间的薄壁组织美国传统〔primary meristem〕A type of plant tissue derived from the apical meristem of a root or stem.初生分生组织：由根部或茎部的顶端分生组织转变而来的植物组织种类美国传统〔root pressure〕Pressure exerted in the roots of plants as the result of osmosis, causing exudation from cut stems and guttation of water from leaves.根压：由于渗透作用而导致的植物根部的压力，使从切断的茎部渗出液体并从叶子上渗水美国传统〔stem rust〕A rust disease affecting the stem of a plant.茎锈病：感染植物茎部的锈病美国传统〔transition region〕A zone in a seed plant where the vascular tissue of the root changes into the vascular tissue of the stem.过渡地区：种子植物中的一个部位，其根部的维管束组织变成了茎部的维管束组织美国传统 |
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