复数：passe-partouts
1.无处不可通行者,通行无阻者
2.万能钥匙
3.嵌画片或照片的框边
4.裱画镶框法
5.镶画用的胶纸板
1.something that gives unrestricted access to a building or area, e.g. a master key
2.a decorated mat around a framed picture
3.adhesive tape or gummed paper used to attach pictures to mats before framing
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