aim to和aim at的共同点,和区别!

aim:
aim to do sth/ aim at doing sth./ aim at sth 指望,旨在,针对
Businesses will have to aim at long-term growth,not the present profit.
aim sth at:aim a gun at the animal / aim a pipe at the puma 把…瞄准,把…指向；把…掷向
aim 靶子,目标/目的,志向；宗旨 take aim at (对…)瞄准
aim at,aim to
aim at 是“瞄准”、“针对”的意思.例如：
He is aiming at the target.
他在瞄靶.
I am not aiming at you.
我不是针对你.
aim to do（美）= aim at doing（英）,是“目的在于”的意思,但在具体句子中可以有不同的含义.例如：
He aims at mastering English.
他目的在于掌握英语.
He aims to master English.
（同上）
下面两句 = I hope to finish it tomorrow.
I aim at finishing it tomorrow.
I aim to finish it tomorrow.
我想在明天完成它.
下面两句 = I try to learn ten new words by heart every day.
I aim at learning ten new words by heart every day.
I aim to learn ten new words by heart every day.
我要每天记十个新词.

be aimed at 目的是，旨在,为了；例句：Our marketing campaign should be aimed at young working couples。
我们的行销活动应该针对年轻的上班夫妇.（以我的理解，相对以下两个，这个用法一般要委婉一点，最好把这个词就记成“为了”这样就好用了）
aimed at 针对；目的在于 例句；I aimed at the...