n.(用以开关电视机等的)旋钮,(门或抽屉的)球形把手,疙瘩,节
knob的第三人称单数和复数

原形：knob第三人称单数：knobs复数：knobs过去式：knobbed过去分词：knobbed现在分词：knobbing

They can't use this piece of wood because it has too many knobs.
他们没法用这块木头，因为它的树节太多了。
Eric twisted the knob of the door and went inside.
埃里克转动门把手，然后走了进去。
Mary twirled the knob of the door.
玛丽转动门把手。
I adjusted the knob on the stove to turn up the heat.
我在炉灶上转动旋钮增加火力。
The doorknob was loose, making it hard to lock the door securely.
门把手松动，使得门锁不上。
She turned the volume knob down to listen more clearly.
她把音量旋钮调小以便听得更清楚。
He twirled the tuning knob to find his favorite radio station.
他转动调谐旋钮寻找他最喜欢的电台。
The mechanic tightened the engine's oil drain plug with a wrench instead of a knob.
技工用扳手而非旋钮拧紧了引擎的油底壳放油塞。
The lamp had a dimmer knob, allowing you to control the brightness.
灯有一个亮度调节旋钮，可以控制光线的强弱。
She glanced at the clock on the wall, turning the knob to set the alarm for the next day.
她瞥了一眼墙上的时钟，转动旋钮为第二天设定了闹钟。
The remote control had buttons for every function, but also included a volume knob for convenience.
遥控器上有每个功能的按钮，但也有一个方便的音量旋钮。
He carefully unscrewed the rusty knob to access the hidden compartment.
他小心翼翼地拧下生锈的旋钮以打开隐藏的隔间。
In the old house, every door had a distinctive brass doorknob that felt cool to the touch.
在那座老房子里，每扇门都有一个独特的黄铜把手，摸上去凉爽。