茎

• The main stems of a plant show negative geotropism as they grow upwards .
  植物茎往上长时表现出负向地性。
• It seemed to rise like a stalk out of a sea of green leaves .
  它象是从一片绿叶子的海里伸出来的一根长茎。
• Minute fragments of shoot apices are proverbially difficult to culture .
  微小的茎尖切段通常是难以培养的。
• The hay types tend to be rather earlier in growth, more upright in their form .
  干草类生长较早，茎较直立。
• There are two types of stem growth habit and floral initiation in soybean .
  大豆茎生长习性和花的发生有两种类型。
• They had argued about the corn pipe and she had just gone away .
  他们过去为了玉米茎做的烟斗吵过嘴，她也离家出走过。
• The main stem and fruiting branches of determinant types remain relatively short .
  有限生长类型的主茎和果枝仍然较短。
• The pith of this stemlike stele appears rather strongly like collenchyma tissue .
  茎状中柱的髓显得颇强健，像厚角组织。
• In tubers from such potatoes stem mottle symptoms are rarely observed .
  由这类马玲薯产生的块茎中茎斑驳症状不易观察到。
• David had one hand around the stem of a bush which grew just under the lip of the cliff .
  大卫一手抓住长在崖檐下的一根灌木茎。