keep on例句

They keep on muddying the waters by raising other political issues.
他们不停地提出其他政治问题，力图把水搅浑。

Ray will earn his keep on local farms while studying.
雷求学期间会在当地的农场干活赚取生活费。

He used to keep on at me about the need to win.
他以前总是跟我唠叨必须获胜才行。