即使在经验丰富的登山者中，平纳克尔峰也被认为是很难攀登的。Even among seasoned mountaineers Pinnacle Ridge is considered quite a tough proposition.登山队员们终于成功地征服了这座难以攀登的山峰.At last the climbers succeeded in conquering the difficult mountain.登山者找不到继续向上攀登...
They identified six plants as having potential for development into pharmaceutical drugs.他们验明6种植物有可能提炼出药物麻醉剂。The election was held six months ahead of schedule.选举提前了6个月举行。More than six million youngsters tune in to Block...