Children must n't play with dangerous objects like sharp knives or scissors.

He twiddled with the radio knob until he found the right programme.

他转动了一会收音机旋钮才找到了合意的节目。

This knob , which was round and of polished brass, shone like a terrible star for him.

门钮形状浑圆,铜质光滑, 在他眼前闪闪发光,好象一颗骇人的星.

There is a knob of butter on the table.

桌子上有一小块黄油.

He wrenched the knob off when he was trying to open the door.

他试图开门时把门柄扭掉了.

He turned on the radio and fiddled with the knob until he got a talk show.

他打开收音机，拨动旋钮，直至调到一个脱口秀节目。

Loosen quadrant knob . Place a square against the blade and shoe to adjust the 90 setting.

松开调节旋钮,放一把直角尺靠紧锯片和底板用以调整90度设置.

When I pull this knob, the engine starts.

当我拉这个把手时, 发动机就启动了.

My radio's knob got loose.

我收音机上的旋钮松动了。

A knob is used for rapid menu and waveform navigation.

一个旋钮控件用来调节波形图标显示速度.

This knob is only held on by sellotape.

这个旋钮只是用透明胶带固定住的.

Press down and hold the tuning knob and lamp button while turning on the radio.

同时按下并保持调谐钮和灯开关,打开机器.

When music turns electronic, the twist of a knob can change everything.

自从有了电子音乐, 捻一个旋钮便改变了一切.

He pressed the knob and the lid flew open.

他一按按钮,盖子就迅速打开了.

To turn down the radio, you have to use the volume knob.

要把收音机的音量调小, 必须使用音量旋钮.

He shook at the knob, but the door was locked.

他摇了摇门把手, 但是门锁住了.

Insert a blank piece of paper, turn the knob, and a dollar slips the other side.

插入一张空白一张纸, 打开旋钮, 以及美元下滑了对方.

Harry had a thin face, knobbly knees, black hair, and bright green eyes.

哈利有一张瘦削的脸, 枯瘦的四肢, 黑色的头发以及明亮的绿色眼睛.

He has very thin legs and knobbly knees.

他腿很细,膝盖呈圆球状凸起.

He always carried leather briefcase under his arm , and a knobby walling-stick in his hand.

他永远挟着他的公文皮包.并且永远带着他那根老粗老粗的黑油油的手杖.

We have replaced the knobs on all the doors.

我们将门上所有的把手都换了.