喘一口气

• The highway that he followed was open , and at a little distance dipped into a valley , across which it could be seen running from edge to edge . he had traversed the greater part of this depression , and was climbing the western acclivity , when , pausing for breath , he unconsciously looked back
  他走的是一条宽阔的大路，前面不远，大路就进入一个山谷，从远处看去，大路从山谷的这一头到另一头穿谷而过，他把这段山谷中的道路走了一大半，然后走上了西边的山坡，在他停下来喘一口气的时候，无意间向后看了一眼。