You should always aim at doing your job well.

你应力求永远做好本职工作。

You should always aim at doing your job well.

你应该以做好你的工作为目标。

We should aim at doing something useful to the society.

我们应当志在做一些对社会有益的事情。

We should aim at doing something useful to the society.

我们应着眼于做一些对社会有益的的事。

Howeer important fame and wealth may be, we must not let them become our object in life. We should aim at doing something useful to the society.

不论名利如何重要，我们切不可让它们成为我们生活之目标。我们应当志在做一些对社会有益的事情。