adj.中心的，很重要的，焦点的，有焦点的

The focal point of the room was the large fireplace.
这个房间的焦点是那个大壁炉。
She has a focal role in the organization's decision-making process.
她在该组织的决策过程中扮演核心角色。
The earthquake had a focal depth of about 15 kilometers.
这次地震的震源深度约为15公里。
The lens adjusts its focal length to focus on distant objects.
镜头调整焦距以对远处物体对焦。
His research has been mainly focused on climate change.
他的研究主要集中在气候变化上。
The accident became the focal issue in the election campaign.
这起事故成为了选举运动的核心议题。
The meeting will be held at the hotel's main conference room, which is the focal point for all events.
会议将在酒店的主要会议室举行，那是所有活动的中心地点。
The artist skillfully captured the focal point of the landscape in his painting.
这位艺术家巧妙地在他的画作中捕捉到了风景的焦点。
The teacher made sure every student understood the focal concept before moving on.
老师确保每个学生都理解了关键概念后才继续讲授。
The lens with a longer focal length provides a narrower field of view.
焦距更长的镜头提供更窄的视角。