26618: it is not an efficient means of preparing for exams. it may work for the best students, but just in the short-ter

26618: it is not an efficient means of preparing for exams. it may work for the best students, but just in the short-term.
想知道本句翻译及语言点
1_it is not an efficient means of preparing for exams. it may work for the best students, but just in the short-term.
翻译：这不是一种有效的为考试准备的方法。这可能对那最好的学生有效果，但仅仅在短时期内。
1.it is not an efficient means of preparing for exams：
翻译：这不是一种有效的为考试准备的方法
mean：n. 1. 平均数, 平均值2. 中间, 中庸3. 几何平均；等比中数
means：n. 1. 手段,方式,方法,途径2. 收入, 财富
preparing for exams：备考 为考试准备
2.it may work for the best students, but just in the short-term.
翻译：这可能对那最好的学生有效果，但仅仅在短时期内。
work for the best students：对那些优秀/最好的学生有效果
work：v. 1. (使)工作2. (使)运作, 运转3. (使)产生效果
in the short-term：在短时期内。