be two

• There are two kinds of venation, parallel and net .
  叶脉有两种：平行脉和网状脉。
• It is two years since we parted .
  我们分别以来有两年了。
• We are two sensible persons .
  我们是两个头脑清醒的人。
• The earth and the sun are two great sources of life .
  地球与太阳是生命的两大源泉。
• There are two proposals in one day for jastrow !
  一天就有两个人同时向杰斯特罗求婚！
• By my watch it is two o'clock .
  我的表现在是两点钟。
• There are two systems of units in common use in mechanics .
  在力学中通用两种单位制。
• They are two young people who are really going places .
  他们是两个事业顺利的年轻人。
• These shoes are two sizes too small .
  这鞋小了两号。
• The city is two hours distant .
  该城离此两小时路程。