董事长 /tʊŋʂìtʂǎŋ/ Noun

Example

• 赫伯特先生自告奋勇担任[主席]（董事会/委员会/会议）的主席。
• Sir Herbert took it upon himself to act as chairman.
• “自告奋勇”体现了主动承担责任的姿态。