什么是 taper?A small or very slender candle.A long wax-coated wick used to light candles or gas lamps.A source of feeble light.A gradual decrease in thickness or width of an elongated object.A gradual decrease, as in action or force.To become gradually narrower or thinner toward one end.To diminish or lessen gradually. Often used with off: The storm finally tapered off. To make thinner or narrower at one end.To make smaller gradually.Gradually decreasing in size toward a point.