contractions是什么意思？

contractions

• n. 收缩( contraction的名词复数 )，缩减，缩略词，（分娩时）子宫收缩；

例句

• Contractions are much more common in speech than in writing. 缩略词在口语里比在书写中常见得多.
• Foods and fluids are mixed in the stomach by its muscular contractions. 通过胃部肌肉的收缩食物和流质在胃中混合。
• Muscle contractions are powered by the chemical adenosine triphosphate ( ATP ). 肌肉收缩是由化学物质三磷酸腺苷 ( ATP ) 提供动力的.

柯林斯高阶英汉双解学习词典释义

• N-COUNT
  (分娩时的)子宫收缩，宫缩
  When a woman who is about to give birth has contractions, she experiences a very strong, painful tightening of the muscles of her womb.
• N-COUNT
  (词的)缩约形式
  A contraction is a shortened form of a word or words.
  例句
  'It's' (with an apostrophe) should be used only as a contraction for 'it is'. it's (带撇号)只能用作 it is 的缩约形式。