America's system of national parks, a model for similar set-ups around the world, was based on the idea of limiting human presence to passing visits, rather than permanent habitation.
美国的国家公园就是分布于世界各地类似的系统中的典范，其理念就是在保护区内人类只是游客，而不能成为永久居民。
Statler's first permanent hotel, in Buffalo, opened the year the Model t Ford was launched, and, like it, used standardisation and large-scale production.
Statler的第一家永久性酒店坐落在布法罗，其开业的那年正好是福特T型轿车下线的那年。这家酒店也采用了和生产T型轿车一样的标准化和大规模的生产方式。
When the sun's rays passed through a lens in one of the walls, Leonardo's 3D model would have been projected on to the material, creating a permanent image.
当阳光穿过墙上的一个透镜头时，达·芬奇的三维头像就会被投射在织物上面，制成一个永久性的头像面容。
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