We welcome you to visit China at a convenient time.

欢迎您在方便的时候访问中国。

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Please confirm your participation at a convenient time.

请您在方便时确认您的参与与否。

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Patients currently taking the medicines should make an appointment with their doctor at a convenient time.

正在服用该类药物的患者应与医生联系。

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Where it used to take half a day to get documents certified by the ward office, she can now phone in a request and collect the papers at a convenient time.

CNN: Pressure Points

The news came at a convenient time for Bayern.

WSJ: Borussa Dortmund Dismayed by G?tze's Transfer to Bayern Munich

Gates' remarks come at a convenient time.

FORBES: Magazine Article