句中的on什么使用方法

Johnson’s prospective relationship with Biden, proudly Irish-American, has come under the spotlight in recent days, particularly on Biden’s stated concerns over the safety of the Good Friday agreement under Brexit.

句中的on是什么使用方法，表示什么含义

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Johnson’s prospective relationship with Biden, proudly Irish-American, has come under the spotlight in recent days, particularly on Biden’s stated concerns over the safety of the Good Friday agreement under Brexit.
on 跟 spotlight 搭配。意指“关注的焦点落在......上”。
The report has turned the spotlight on the startling rise in street crime. 
这篇报道使大家将关注的目光投向街头犯罪激增的问题。
《牛津词典》
Campaigners are shining a spotlight on the world's diminishing natural resources. 
从事这场运动的人要使公众注意到世界上的自然资源日益降低。
《牛津词典》
Congress is turning the spotlight on the private lives of its members.
国会正把大伙的注意力转移到其成员的私生活活上。