undemonstrative [ˌʌndɪˈmɑnstrətɪv]

例句:

• Mondanile's singing is underplayed and undemonstrative throughout.
  来自BBC
• Lady Ainslie is an undemonstrative woman who rarely touches even her own son.
  安斯利夫人是一个连自己儿子都很少抚摸一下的矜持女子。
  
• He was an undemonstrative man, substantial.
  他是个结实不露感情的人.
  
• Touched by this evidence of emotion and concern from her undemonstrative child.
  来自A. Lambert
• It is a simple and undemonstrative recognition of the love and care that countless gay couples show each other.
  来自THETIMES