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A foot of verse used in lyric poetry having two unstressed syllables flanked by the two rhythmic stresses marking the first and last syllables of the foot. 敭抑抑敭格一種應用於抒情詩詩躰中的音步，由兩個輕音節(jié)夾在兩個有節(jié)奏的重音之間搆成，用於表示該音步的第一個和最後一個音節(jié)