The former president paid an unofficial visit to China.

前总统到中国进行了私人访问。

U. S. officials declined to comment in detail on Mr. Carter's unofficial visit. 'We do not want to jeopardize the prospects for Mr.

美国官员拒绝就卡特此次非官方访问的细节置评。

The 27-year-old second in line to the throne flew out of Wellington Tuesday morning bound for Sydney for a three-day unofficial visit to Australia.

这位27岁的英国王位第二继承人于当天上午离开惠灵顿，飞往悉尼，将对澳大利亚进行为期三天的非正式访问。

They were paying their own unofficial visit, an alternative to the (in their eyes, phoney) reconciliation of the earlier event attended by Messrs Tusk and Putin.

他们的非正式访问，正是图斯克和普京出席和解仪式的替代方案（在他们看来都是借口）。

These visits including the state visit, the friendly visit, the working visit, the study visit, each kind of service visit, and the unofficial private visit and so on.

这些访问包裹正式访问的国事访问、友好访问、工作访问、考察访问、各种业务访问，以及顺道访问、非正式的私人访问，等等。