英汉词典

1. （通常指经过努力）获得，达到
    If you attain something, you gain it or achieve it, often after a lot of effort.

attain的近义词

    e.g. Jim is halfway to attaining his pilot's licence.
           吉姆就快要拿到飞行员执照了。

2. 达到，进入，实现（某种状态或情况）
    If you attain a particular state or condition, you may reach it as a result of natural development or work hard to attain this state.

attain的解释

    e.g. ...attaining a state of calmness and confidence.
           达到镇定自若、信心十足的状态