hold on to doing 的中文翻译是“坚持做某事”，读音为[hld n tu du]。

例句：

1. Despite the difficulty, you need to hold on to doing what you love.

尽管困难重重，你需要坚持做自己喜欢的事情。

2. He decided to hold on to doing exercise every morning to maintain his health.

他决定坚持每天早上锻炼以保持健康。