0 a small, usually circular object used to fasten something, for example a shirt or coat -- 鈕扣，扣子
I did up/undid (= fastened/unfastened) the buttons on my blouse. 我扣上／解開襯衫上的鈕扣。
1 a small, sometimes circular object that you press to operate a device or a machine, or an area on a computer screen that looks and acts like one of these -- 按鈕
2 to fasten something, usually a piece of clothing, using buttons -- 扣上（…的）鈕扣
The introduction of 4th gen buttoned device significantly improved the results.
They wore patriotic colours, red, white, and blue, and their jackets buttoned at the back, as a daily, practical exercise in fraternal interdependence.
As a result, the operator "interface" is limited to four ruggedised push buttons to select calibration and other control.
Participants were required to respond to stimuli by pressing buttons on the keyboard.
Each trial was initiated by the participant by pressing one of the response buttons on the computer keyboard.
Despite all the computer automation, the displays and dials and lights and buttons and switches, the airline cockpit is a site rich in language.
The target and distractors are not indicated by lights, but by pictographs projected onto the buttons.
To answer the comprehension questions, participants pressed one of two hand-held buttons, one for a "yes" response and one for a "no" response.
