It has no manual focus facility.
它没有手动调焦功能。
All zoom, focus, and lens shift adjustments are manual.
所有的变焦，聚焦和镜头移动调整手册。
The main focus of this manual is the management of fresh ground water resources.
本指南的主要中心是地下淡水资源的管理。
The main focus of this manual is the management of fresh ground water resources.
本指南的主要中心是地下淡水资源的管理。
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