This is the 5104th most frequent Chinese word.
biden
The term "biden" is not a standard Chinese word; it may refer to the name "Biden" (拜登), typically connected to U.S. President Joe Biden, in a transliterated form.
This sentence uses "拜登" (Biden) as a proper noun to refer to a specific individual, the former President of the United States.
拜登是美国的总统之一。
Biden is one of the presidents of the United States.
Here, "拜登" (Biden) is used as a possessive noun to indicate ownership of the policies being discussed.
大家都在讨论拜登的政策。
Everyone is discussing Biden's policies.
In this sentence, "拜登" (Biden) is the subject of the sentence, emphasizing his interest in the topic of foreign affairs.