isu

abbr. 整体式瞄准镜装置（Itegrated Sight-Unit）；国际滑冰联盟（International Skating Union）

释义与例句

n.
  1. 1.

    An individual seat in the loft-like balcony of a sumo arena.

    政治 体育 军事

词源

Borrowed from Japanese 椅子.

来源：wiktionary