单词：knobbed
a. 有节的, 多节的, 有圆头的
s used of old persons or old trees; covered with knobs or knots
knobbed的用法和样例：
例句
- He pressed the knob and the lid flew open.他揿了揿按钮，盖子就猛地弹开了。
- You may turn the right knob on the TV to switch it on.你可以拧电视上右边的旋钮把它打开。