[U]脊,山脊 a long narrow raised part of a surface, such as the top of a range of mountains or of a sloping roof where the two sloping surfaces meet [C]脊状突起 raised line where two sloping surfaces meet; narrow raised strip
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[U]脊,山脊 a long narrow raised part of a surface, such as the top of a range of mountains or of a sloping roof where the two sloping surfaces meet [C]脊状突起 raised line where two sloping surfaces meet; narrow raised strip