1. Think of it as a sort of reverse tapering process. 可以把它想象为一种反向锥形过程。
2. Larger culm sheath auricle not slanted downward, not tapering. 大竿箨叶耳不倾斜向下，并非渐狭。
3. A rounded, often wooden club, wider and heavier at the hitting end and tapering at the handle, used to strike the ball. 球棒一种圆的，常常是木质的棍棒，一端较重较宽，用于击打，至手柄处则越来越细，常用于击棒球。
英英解释
n.
1. the act of gradually lowering the size or amount
2. gradually narrowed toward a point
3. becoming gradually narrower
4. gradually decreasing until little remains
