achieve
实现,取得(achieve = 最通用,通过努力到达预期结果)
attain
达到,获得(attain = 更正式书面,侧重达到某个高水平或标准:attain a qualification / level)
The charity's campaign achieved its fundraising target of one million pounds within just three weeks.
该慈善机构的募捐活动在短短三周内实现了一百万英镑的募款目标。
Only a small percentage of students managed to attain the highest grade in the national mathematics examination.
只有一小部分学生在全国数学考试中达到了最高分。