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Listen, we're going down the middle of the train - Lee Jordan's got a giant tarantula down there.

I know the first 'down' is a preposition, but I don't know whether the second 'down' is an adverb or a preposition.

What does the second down indicate here? Distance or direction?

Thanks.
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LiveinjapanI don't know whether the second 'down' is an adverb or a preposition.
I'd say adverb.
LiveinjapanWhat does the second down indicate here? Distance or direction?
Direction. Certainly not distance. That would be something like three miles down there.
CJ
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Thanks, CJ.

So, the scond 'down' indicates the direction of the middle of the train, right?

Can I leave out the second 'down'?

Thanks.
The quote didn't make sense to me, so I treated the two sentences as if they were completely unrelated.
The first part, to my mind, should have been down to the middle of the train. (That's where he has the tarantula.)
To go down the middle of train is to walk along the middle corridor of the train (lengthwise) (supposing there is one).
To go down to the middle of the train is to go until you reach the place in the train that is approximately half way between the beginning and end of the train. down is most likely to be taken directionally as 'moving from a place closer to the head of the train toward a place closer to the end'.
CJ
CalifJimThe first part, to my mind, should have been down to the middle of the train.  (That's where he has the tarantula.)
Understand!

Thansk, CJ. 
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