畅通

• You should keep the passages and exits clear
  你们应该保持通道和太平门的畅通。
• I repeat : the runway is not clear for take - off
  我再说一遍:跑道尚未畅通,不能起飞
• 1 lay the casualty supine maintain an open airway
  1让伤病者仰卧，保持气道畅通。
• The canals join to form one continual waterway
  翻译：这些运河汇成一条畅通的水道。
• To carry away rainwater , our drains must be kept clear
  疏导雨水，需要畅通的渠道。
• We need your help to keep our drains clear
  渠道畅通，有你帮手，必定会成功。
• You should also keep the passages and exits clear
  警你们要保持通道和太平门的畅通。
• I repeat : the runway is not clear for take - off
  我再说一遍:跑道尚未畅通,不能起飞
• One man went ahead to see it the road was clear
  一个人走在前面，看看道路是否畅通。
• If he is unconscious , keep his airway unobstructed
  如伤病者昏迷，必须保持气道畅通。