therefore

• He was busy , therefore he could n't come .
  他忙得很，所以没有来。
• They are fond of fun and therefore witty .
  他们喜欢玩笑，所以情趣横生。
• The sliver must therefore be attenuated .
  因此，必须要拉细条子。
• I was ill, and therefore could not come .
  我病了，所以未能来。
• An arrangement was therefore necessarily made .
  这一来就必须做出一种安排。
• Charts should therefore be printed on tough paper .
  海图应以耐磨的纸张印刷。
• We can therefore disconnect this bond(5a) .
  我们于是可以把这个键（5a）切断。
• Wealthy landowners are therefore as a rule exempted .
  有钱的地主一般都免税。
• The vertical axis is therefore called the imaginary axis .
  因而纵轴称为虚轴。
• Therefore the government there must be suppressed .
  因此，必须取缔那里的政府。