To view this page ensure that Adobe Flash Player version 10.2.0 or greater is installed.
Either scripts and active content are not permitted to run or Adobe Flash Player version 10.2.0 or greater is not installed.
姓名: 单位: 联系方式:
今天,我们将去了解防御性建筑的特点。我们首先会到中世纪的苏格兰,然后到法国,去看看那里壮观的城堡要塞,最后,我们将参观荷兰人为防御海水而修建的雄伟的屏障。