是

• The value of commodities often fluctuates .
  商品的价值是经常变动的。
• The clove hitch is an extremity restraint .
  丁香结是一种四肢约束法。
• He turned to that soft eboe woman .
  他亲近的是那个软弱的伊波族女人。
• He did not answer for fear of hurting her .
  他没回答是怕伤她的感情。
• The change of scene will do her some good .
  换个环境对她是有好处的。
• His wife was so poignant and timely .
  他的妻子是这样有分寸和适时宜。
• I told him how i had read in the papers .
  我告诉他我是在报上看见的。
• Pruritus is one of the commonest symptoms .
  瘙痒是最常见的症状之一。
• Gasification is really a simple process .
  气化确实是一个简单的过程。
• This increase is a cooperative phenomenon .
  这种增加是一种协同现象。