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He wanted to push the boundaries of how people play games together.

She continues, in many ways, to push the boundaries of her role.

They want to see 'how far can we push the boundaries and get away with it'.

Pushing the boundaries he had allowed her to set when they first married.

All are pushing the boundaries of what green travel means.

All art forms must have people pushing the boundaries and trying to understand what is possible.

Do you ever worry about pushing boundaries and going too far?

Let's just take this bit about artists pushing the boundaries.

"We'd love one day to have a hotel up there and keep pushing the boundaries."

Only a few try to push the boundaries of what is acceptable.