典型的弓型窗是由三扇窗组合而成。中间为固定窗，两侧为提拉窗或平开窗。
Typically Bay window is consisted of three Windows joined together. The center window is usually fixed, with operating double-hung or casement Windows at the sides.
全国第七届三版展为我们了解中国当代版画艺术的特点开启了一扇窗。
The 7th national print exhibition opens a window for us to understand the characteristics of today's Chinese print arts.
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