大约需要

• The journey from london to oxford takes about an hour and a half .
  从伦敦到牛津大约需要一个半小时。
• Approximately 500 extras are needed for this scene
  这场戏大约需要500名的临时演员。
• Foreign graduate students pay about 20000 dollars
  研究生大约需要两万美元。
• This would require approximately 4000 jets
  这个项目大约需要4000个喷射点。
• It would take the ocean about 4000years to dry up
  译：它大约需要4000年的时间才干涸。
• The whole incubation needs about 40 hours
  整个孵化过程大约需要40小时。
• From sanya to haikou is about four hours by bus
  从三亚到海口坐公共汽车大约需要4小时。
• The construction of a large bridge takes about two years
  一座大桥的修建大约需要两年。
• Not too far , about a twenty - minute walk
  不太远,步行大约需要二十分钟
• The entire process takes about three months
  整个过程大约需要3个月。