溝， みぞ

1. ditch, drain, gutter, trench 2. groove, tread, indentation 3. gap (between people, countries, etc.), gulf, rift

沟渠、排水沟、檐沟、沟壑；沟槽，胎面，凹痕；鸿沟（人际间、国家间等的），裂痕，裂隙

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