apex.

同根派生

英汉例句

• The growing apex or main shoot of a shrub or tree.
  顶枝灌木或乔木的生长顶端或主要新梢
• APEX tickets are usually not open.
  预售优惠票预定的搭乘日期通常不能更改。
• He reached the apex of power in the early 1930s.
  他在三十年代初达到了权力的顶峰。
• It has leaf primordia and a shoot apex.
  它有叶原基和一个苗端。
• Having the shape of a cone resting on its apex.
  陀螺形的形状象陀螺或倒置的圆锥的