binocular fixation

例句：

1. 1. The astronomers used binoculars to observe the stars.
   天文学家们使用双筒望远镜观察星星。
2. 2.During the flight, the pilot fixed his binoculars on the target.
   飞行中，飞行员用双筒望远镜锁定目标。
3. 3. The scientist fixed the telescope to the tripod and began his observation.
   科学家将望远镜固定在三脚架上，开始了他的观察。