Fetching details from the dictionary...
secretary-general; director
新しい事務総長が就任した。
The new secretary-general has taken office.
彼は長年、事務総長を務めている。
He has served as secretary-general for many years.
総会で事務総長は気候変動への対応を訴えた。
At the general assembly, the Secretary-General appealed for action on climate change.