being

• This is the catch in designing planes .
  这是在设计飞机中的棘手难题。
• What is the speed limit on the motorway ?
  高速公路的速度限制是多少？
• This state has been named "premunition" .
  这种状态称为“传染免疫”。
• There is a new spirit rising in men .
  现在人们当中兴起了一种新思潮。
• We were bogged down by overwork .
  过分繁重的工作已经使我们陷入困境。
• I am afraid i can not speak for geoff .
  很抱歉，我不能代表杰夫说话。
• You know treason is a capital offence .
  你知道背叛是一种严重的罪行。
• He is alive -- his heart is still beating .
  他还活着心脏还在跳。
• The inactive components are important too .
  非活性的成分也是重要的。
• The brass plate must be adherent to the steel .
  黄铜片必须和钢粘结。