to pivot的用法和樣例：
例句
- A device used to determine geographic direction, usually consisting of a magnetic needle or needles horizontally mounted or suspended and free to pivot until aligned with the magnetic field of Earth.
指南針用于確定地理方向的設備，通常包括一個(gè)或多個(gè)水平安裝或懸掛的磁針，可在樞軸上自由活動(dòng)直到與地球磁場(chǎng)在一條線(xiàn)上
