a small part of a machine that you press to make it work （机器的）按钮◆You can control the temperature at the touch of a button. 你按一下按钮，就可以控制温度。⨁to hit / press / push a button 按一下按钮
() a small place on a computer screen that you click on to make it work （计算机屏幕上的）按钮◆To reply to an email, click on the ‘reply’ button. 要回覆电子邮件，点击 reply 按钮。