He made an official visit to Tokyo in March.

他于三月到东京进行了一次公务访问。

《牛津词典》

The US President Richard Nixon paid an official visit to China, during which Sino-US joint communique was issued in Shanghai.

美国总统理查德·尼克松对中国进行正式访问，其间《中美联合公报》在上海发表。

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It is thought to be the first time a member of the royal family has used an aircraft provided by a private individual for an official visit.

据悉，这是王室成员首次使用私人提供的飞机进行官方访问。

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But Secretary of State Hillary Clinton says her husband's trip was not an official visit.

VOA: special.2009.08.08

Clinton said Indian Prime Minister Monmohan Singh, with whom she met earlier Monday, had accepted an invitation from President Obama to visit the White House November 24 for the first official state visit for the Obama administration.

VOA: standard.2009.07.20

The date is just before Mr Obama travels to London for an official visit.

BBC: Protocol rules out US President Obama's NI visit

He is the first president to make an official visit to Puerto Rico in nearly 50 years.

WHITEHOUSE: Highlights of the President��s Unprecedented Commitment to the People of Puerto Rico | The White House

In 2007, Mr. Sarkozy welcomed Gadhafi on an official visit to France, his first in more than three decades.

WSJ: Censorship Inc.: Life Under the Gaze of Gadhafi's Spies