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English in the News--Fly on the Wall 隱密觀察 artwork
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English in the News--Fly on the Wall 隱密觀察

ICRT English in the News by ICRT/Jane Lee

Jun 25, 20217:39Education

One who is able to observe something closely but invisibly and without interfering in the situation. 躲在毫不引人注意的地方觀察,好似牆上的蒼蠅。