避難階段
ある時から避難階段はオフィスビルの重要なデザインボキャブラリーとなった？
Has the escape staircase become an important design vocabulary for office buildings since one time?
ある時から避難階段はオフィスビルの重要なデザインボキャブラリーとなった？
Has the escape staircase become an important design vocabulary for office buildings since one time?
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