Acquisition & acquirement & attainment
　　1.Acquisition
　　1.1多指知识和技能的获得，如果是物品，通常指比较贵重的物品
　　1.2
　　eg:
　　the money will be spent on acquisitionfor university library.
　　2.acquirement
　　2.1表示通过努力，能力约等于achieve.
　　2.2
　　Eg:
　　A good knowledge of English is her acquirement.
　　3.attainment
　　3.1强调获得的造诣，以及成就
　　3.2
　　Eg:
　　The attainment of his ambitionswas still a dream.