It is better to write in regular, not very sophisticated English, than to use phrases or structures you don't fully understand.

最好用常规的，不复杂的英文写作而不是用那些你自己都不完全懂的词组或句型结构。

youdao

Yet they find themselves stumbling on simple tasks, all because they do not have the foundation necessary to fully understand or utilize the framework.

然而，他们发现在完成简单任务时就磕磕绊绊，这都是因为没有必要的基础知识来完全理解和使用框架。

youdao

On the other hand, you might be wise to begin with research if you intend to tackle an issue you do not fully understand.

另一方面，从调查开始也许会是一个明智的选择，如果你打算去解决一个你并不是完全懂的问题。

youdao

So the game is not just to somehow or other get the solution to the problem set but to fully understand how it's done, and the TAs will be there to help you.

所以,这个过程不仅仅是,通过某种方式解出题目,还要全面理解解题的过程,助教会帮你们的

耶鲁公开课 - 基础物理课程节选

There is a power in listening to others without interruption in order to fully understand what they are saying to fully understand what they are not saying and to ensure that they know they are heard.

FORBES: Sometimes, Silence is Golden

G8 meeting in Evian from what was going on at home, Mr Blair seemed not to understand fully how much trouble he was in.

ECONOMIST: Tony Blair and Iraq

We do not claim to fully understand unionist perceptions.

BBC: IRA statements in full