英和和英

On reflection,...

to reflect

a time when a person thinks about a certain subject

Think seriously about the matter

to pause to think―stop and consider

in a conceivable manner

When you consider that

after much [serious] thought

Think seriously of the matter

to reflect and consider

Think about it.

have second thought

Let's think about it.

think and think

to re-examine and correct something

Please give it a thought.

Do consider!

to consider once

think thin

to consider something in comparison with a variety of factors

to think seriously

on prudential grounds

Think carefully

to consider something by comparison

I'll rethink it.

to reflect on the consequences of one's action

Please think about it.

He is thinking with folded arms―with his arms folded.

Taking into account...

the act of thinking about something for a while