to examine something closely
Example:
- Your ankle's swollen—I think the doctor ought to look at it.
- I haven't had time to look at (= read) the papers yet.
- Look at the machine quite carefully before you buy it.
to think about, consider or study something
Example:
- The company is looking at ways to reduce waste.
- The implications of the new law will need to be looked at.
- Now is the time to look again at these arguments.
to view or consider something in a particular way
Example:
- Looked at from that point of view, his decision is easier to understand.