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(委员会、组织机构的)主席;(公司)总裁
The chairman of a committee, organization, or company is the head of it.
例句
Glyn Ford is chairman of the Committee which produced the report...
格林·福特是提交这份报告的委员会的主席。
I had done business with the company's chairman.
我和那家公司的总裁有过生意往来。