变焦透镜

例句：

1. 1. The camera has a zoom lens that allows for close-up shots.
   这台相机有一个变焦镜头，可以拍摄近距离的照片。
2. 2. The scientist used a high-quality zoom lens to capture the image.
   科学家使用了高质量的变焦镜头来捕捉图像。
3. 3. The photographer needed a long-distance zoom lens to get a clear shot of the distant mountain.
   摄影师需要一台长焦距变焦镜头来清晰地拍摄远处的山峦。