这座城市建在岩石上，四周筑有城墙。The city was walled and built upon a rock.一段石阶从鹅卵石路上一直向上直通城墙。A number of staircases ascend from the cobbled streets onto the ramparts.古老的荷兰城堡城墙又厚又高，看起来几乎固若金汤。The old Dutch fort with its thick high walls ...
The world can be changed by man's endeavor, and that this endeavor can lead to something new and better .No man can sever the bonds that unite him to his society simply by averting his eyes . He must ever be recepti...
杰伦·拉尼尔创造了“虚拟现实”这个词，并成为推动其早期发展的先驱人物。Jaron Lanier coined the term "virtual reality" and pioneered its early development.大银行是发展这一体系的先驱。The big banks have been the pacesetters in developing the system.她是现代妇女运动的先驱.She is a fo...