variety

• Cavitation can be caused by a variety of reasons .
  气穴可以由各种原因引起。
• The college offers courses in a variety of trades .
  该学院开设多种职业课程。
• This area encompasses an enormous variety of fields .
  这一领域涉及范围极大。
• The varieties of policies are legion .
  政策的种类是繁多的。
• A variety of tumors also strike at me .
  多种肿瘤也袭击我。
• People use it in a large variety of recipes .
  人们将它普遍用作各种食品的辅料。
• A variety of repair material is available .
  各种不同的修补材料都是信手可得的。
• Famine can be caused by variety of factors .
  饥荒可能是由于各种各样的因素造成的。
• A botanist can differentiate varieties of plants .
  植物学家能区分各种不同的植物。
• They may endure as varieties for very long periods .
  在极长时期内停留在变种阶段。