spotter
plural of wad
Of or pertaining to seroepidemiology
A person who observes something. / A member of a sniper team who in addition to this function is responsible for providing additional information about targets from a different point of view.
plural of punning
訓練を受けた観察者が珍しい鳥を見つけ、他のメンバーに知らせた。
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