although we had broken the record for distance in gliding, and although mr. chaunte, who was present at that time, assured us that our results were better than those that had ever been attained before, when we looked at the time and money which we had expended and the progress made and the distance yet to go, we considered our experiments a failure.특히 and the progress 이쪽의 문장 구조가 잘 이해가안갑니다!! ㅠㅠㅠㅠ