He roamed to and fro, meantime, in a state approaching distraction; his heavy sighs succeeding each other so thick as to leave no space for common breathing between.

同时，他来回走着，那样子像是快要精神错乱了；他的接连不断的重重的叹气，一声连着一声，十分急促，仿佛没有正常呼吸的余地了。