A situation where a large subordinate component or division becomes too powerful or unwieldy for the main authority to effectively control or manage, often leading to inefficient operations or difficulty in coordination.
这家公司发展太快，分部越来越多，现在看来有些尾大难掉，总部难以有效协调所有业务。
This company developed too quickly, with more and more branches. Now it seems a bit like the tail wags the dog, making it difficult for the headquarters to effectively coordinate all operations.
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