be under no illusion
US /biːt əˈraʊnd ðə bʊʃ/
UK /biːt əˈraʊnd ðə bʊʃ/

1.
不抱幻想, 清醒地认识到
to understand the true facts of a situation and not have false ideas
:
•
You should be under no illusion about the difficulty of this task.
你对这项任务的难度应该不抱任何幻想。
•
We are under no illusion that this will be easy.
我们不抱任何幻想认为这会很容易。