English is the official language of the ADB, as stated in its Charter.

Chinese, Japanese, and Korean are all commonly used in ADB's private sector operations, due to the large number of member countries in the region that speak these languages.

Using multiple languages in its private sector operations allows the ADB to communicate more effectively with member countries, promote cultural diversity, and increase the efficiency of its operations.

Hindi is the most commonly used language in ADB's private sector operations in the South Asia region, due to the large population of India, which is a member country of the ADB.

Indonesian is the most commonly used language in ADB's private sector operations in the Southeast Asia region, due to the large population of Indonesia, which is a member country of the ADB.

Chinese is the most commonly used language in ADB's private sector operations in the East Asia region, due to the large population of China, which is a member country of the ADB.

Russian is the most commonly used language in ADB's private sector operations in the Central Asia region, due to the historical influence of the Soviet Union in the region.

English is the most commonly used language in ADB's private sector operations in the Pacific region, due to the historical influence of the United States and the United Kingdom in the region.

Arabic is the most commonly used language in ADB's private sector operations in the Middle East region, due to the large number of member countries in the region that speak Arabic.

English is the most commonly used language in ADB's private sector operations in the Africa region, due to the historical influence of the United Kingdom and the United States in the region.

The ADB provides translation services for its private sector operations, in order to facilitate communication with member countries and promote cultural diversity.

You can access the ADB's translation services by contacting the ADB's Translation Unit or by visiting the ADB's website.

The ADB's translation services are free of charge for member countries and their citizens.

The ADB typically takes 1-2 weeks to translate a document, depending on the length and complexity of the document.

The ADB's translation services are generally considered to be excellent, as the ADB employs highly qualified and experienced translators.