Chances are that you will not take a seat at the head of the table or midway along either side: these are places where the boss would naturally sit.
从语法角度上看,冒号后面的these are…是对前面内容的补充说明吗?它充3当什么语法结构?
冒号后面的分句是补充语,对前面的分句作补充、解释。
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