目镜

例句：

1. 1. The scientist uses a microscope to examine the sample.
   科学家使用显微镜来检查样本。
2. 2. The camera has a large eyepiece that allows you to adjust the focus easily.
   相机有一个大目镜，可以轻松调整焦点。
3. 3. The astronaut used the telescope to observe the planets in their natural habitat.
   宇航员使用望远镜观察行星在它们的自然栖息地。