verb
[with obj.]succeed in achieving (something that one desires and has worked for)
获得；实现
clarify your objectives and ways of attaining them.
说明你的目标和实现目标的方法。
he attained the rank of Brigadier.
他获得了准将军衔。
human beings can attain happiness.
人类能获得幸福。
■reach (a specified age, size, or amount)
达到（一定年龄、规模或数量）
dolphins can attain speeds in water which man cannot yet emulate.
海豚在水中可以达到人类无法企及的速度。

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派生
attainability
noun
attainable
adjective
attainableness
noun

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语源
Middle English (in the senses 'bring to justice' and 'reach (a state)'): from Old French ateindre, from Latin attingere, from ad- 'at, to' + tangere 'to touch'