2017 G20，只有俄方翻译没有美方翻译。白宫的解释是美国当时只有一个日文翻译

https://www.cnn.com/2017/07/18/politics/trump-putin-g20/index.html

A senior White House official told CNN the discussion was “nearly an hour.”

The White House, in a statement acknowledging the meeting, contended it was “brief” and said Trump spoke with Putin through Russia’s translator. The US translator at the dinner – each country was only allowed only one – spoke Japanese, the White House said.