1
turn the knob
To adjust the volume, turn the knob clockwise.
要调节音量，顺时针转动旋钮。
门把手；抽屉拉手；球状把手
先理解核心含义，再看它在真实句子里的用法。
门把手；抽屉拉手；球状把手
A round handle on a door, drawer, or piece of equipment; a ball-shaped grip.
To adjust the volume, turn the knob clockwise.
要调节音量，顺时针转动旋钮。
圆形的凸起,尤指从平面隆起的部分；肉瘤或肉垂。
A rounded protuberance, especially one arising from a flat surface; a fleshy lump or caruncle.
圆形凸起
a circular rounded projection or protuberance
可旋转的圆形控制开关,用手指操作。
A rounded control switch that can be turned on its axis, designed to be operated by the fingers.
圆形把手
a round handle
She turned the knob to adjust the volume.
她转动旋钮调节音量。
The door knob is loose and needs to be tightened.
门把手松了，需要拧紧。
He pulled the knob to open the drawer.
他拉开把手打开了抽屉。
To adjust the volume, turn the knob clockwise.
要调节音量，顺时针转动旋钮。
表示一小块固体物。
Add a knob of butter to the pan.
往平底锅里加一小块黄油。
The knob on my bedroom door is loose.
我卧室门上的把手松了。
Not this
He knobbed on the door.
Use this
He knocked on the door.
knob（名词/动词：球形突出物，使鼓起）与knock（动词：敲）拼写相似，但意义完全不同。敲门必须用knock，且通常与介词on连用。
Not this
Press the knob to turn on the TV.
Use this
Turn the knob to turn on the TV.
knob（旋钮）的操作方式是旋转，而不是按压。汉语中'按旋钮'是错误搭配，英语用turn the knob表示旋转旋钮。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
门把手
She grabbed the door knob and pulled it open.
她抓住门把手，把它拉开了。
音量旋钮
He turned the volume knob to increase the sound.
他转动音量旋钮以增大声音。
转动旋钮
To adjust the temperature, simply turn the knob.
要调节温度，只需转动旋钮。
扭动旋钮
She twisted the knob to open the safe.
她扭动旋钮以打开保险柜。
控制旋钮
The control knob on the oven is broken.
烤箱上的控制旋钮坏了。
非常地；特别地（常用来强调）
She said she'd be late, and with knobs on, she didn't show up at all.
她说她会迟到，结果她干脆没出现。
一小块黄油（通常呈球形或块状）
Add a knob of butter to the pan for extra flavor.
往平底锅里加一小块黄油以增添风味。
Use knob naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
想象一个圆形的旋钮，就像一个小圆球，记作‘球纽’。
语域：neutral 常见场景：furniture、appliances、machinery 通常用于描述圆形把手或旋钮，在各类场景中都比较常见，属于中性词汇。
可数名词
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.