n.俯仰运动，上下摆动，起重机臂的转动；v.转舵( luff的现在分词 )； 英英释义： luff[ 'lʌfiŋ ]n.(nautical) the forward edge of a fore-and-aft sail that is next to the mastthe act of sailing close to the windv.sail close to the wind同义词：pointflap when the wind is blowing equally on both side