假设

• Each of these approaches was very fashionable at one time or another .
  任何一种这样的假设都有迷人的时候。
• These assumptions are made as a matter of experience and convenience .
  这些假设是根据经验和方便而做出的。
• The assumption of horizontal flow in the vicinity of the drains fails .
  在排水管附近水平流动的假设不成立。
• For simplicity we assume that the graph of the network is connected .
  为了简便起见，假设网络的图是连通的。
• The first assumption is only satisfied close to the start of a run .
  第一种假设只是在操作刚开始时才能满足。
• For a number of reasons, we assume that such life does exist .
  由于某些原因，我们假设这种生命确实是存在的。
• Normally this may be calculated simply be assuming additive volumes .
  可以简单地假设一个附加体积来进行计算。
• Suppose that the united states were to impose a small tariff on bicycles .
  假设美国要对自行车征收一种低关税。
• These assumptions are difficult to test individually to great precision .
  这些假设很难非常精确地逐个加以检验。
• Suppose the switch in the diagram is suddenly closed in the "up" position .
  假设图中的开关突然闭合到“上”方。