This is the 775th most frequent Chinese word.
主体
"主体" means "main body," "subject," or "principal part."
In this context, '主体' denotes the primary or main element of the building, differentiating it from supplementary parts.
建筑的主体已经完工，只剩下内部装修。
The main structure of the building has been completed, leaving only the interior decoration.
Here, '主体' refers to the main subject or theme of the movie, focusing the content on a specific idea.
电影的主体是家庭的爱情故事。
The main theme of the movie is a family love story.
'主体' here means the principal actor or entity driving an action or purpose, emphasizing an active role.