The rural workforce has been flowing in to the cities ever since the open door policy was adopted.
自从改革开放政策实施以来,农付劳动力正不断流向城市。
It is true that during their explorations they often faced difficulties and dangers of the most perilous nature, equipped in a manner with would make a modern climber shudder at the thought,
确实,在探险中他们经常遇到惊心动魄的困难和危险,而他们装备之简陋足以使现代登山者一想起来就胆战心惊。