Take the subway
The Spanish phrase 'coger el metro' translates to 'take the subway' in English. It expresses the act of using the subway system as a mode of transportation. In this context, 'coger' means 'to take', 'el' is the article 'the', and 'metro' refers to 'subway' specifically.
I am going to take the subway to go to the university
In this example, the speaker is using 'coger el metro' to express their intention of using the subway as a mean of transportation to reach the university.
If you don't want to walk, you can take the subway
In this sentence, the speaker advises the listener to take the subway as an alternative to walking, using 'coger el metro' to refer to this action.
Due to traffic, I opted to take the subway
In this case, the speaker indicates that they chose to take the subway ('coger el metro') as a response to heavy traffic.