sigmoid vein

常见例句

• There is a vein of melancholy in his character.
  他的性格中有少许忧郁的气质。
• She helps her mother when she is in the vein.
  她在心情好的时候会帮她妈妈的忙。
• A vein of gold was seen cropping out.
  可以看见一条金矿矿脉露出地面。
• The central or principal vein of a leaf.
  中脉中心的或主要的叶脉
• He had no comedy vein in his youth.
  他年轻时没有演喜剧的才干。
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