pithecanthropoid
A series of random dots presented to an observer in order to measure his ability to detect motion throughout the visual field
(espionage) A person who defects to a foreign power but remains in their home country so as to gather information etc.
plural of drainage pipe
Pertaining to or characteristic of the pithecanthropoids.
博物館の新しい展示は、来館者を魅了した猿人に特徴的な実物大の復元模型を展示していた。
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