push-button switching的用法和樣例：
例句
- The current will switch over after I push this button.
我按下這個(gè)按鈕之后，電流會(huì )被轉換。 - Usually a transition is triggered by some external force, such as a user clicking a button on a Web page or a script interacting with a page.
通常轉換有某些外力觸發(fā)，比如用戶(hù)點(diǎn)擊網(wǎng)頁(yè)中的某個(gè)按鈕，或者通過(guò)某個(gè)頁(yè)面交互的一個(gè)腳本。
