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1. The planoconvex lens in the microscope magnifies objects, allowing us to see them up close.
显微镜中的平凸透镜使物体放大，使我们能够近距离观察。
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2. This type of lens is commonly used in photography, where it helps focus light onto a photographic film.
这种透镜在摄影中常用，它帮助将光线聚焦到胶片上。
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3.In optometry, planoconvex lenses are used to correct vision problems caused by nearsightedness or farsightedness.
在眼科，平凸透镜被用来纠正近视或远视引起的视力问题。