To be under someone's control and thus compelled to comply; to be in a subservient position where one must obey.
公司有求于客户，即便有些要求不尽合理，大家也只能在他檐下过，不敢不低头。
As the company relies on the client, even if some requests are not entirely reasonable, everyone can only comply, dare not but bow their heads.
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