The old gentleman strode out the door in slow, measured steps.
Tips
usage
Often appears in 踱步 (duóbù, to pace), 踱来踱去 (duó lái duó qù, pace back and forth), and 踱方步 (duó fāngbù, to walk with slow, measured steps — an image of self-important leisure).
register
Slightly literary in feel — evokes a thoughtful or unhurried gait. In casual speech 走来走去 (zǒu lái zǒu qù) is more neutral.