to try to do something difficult before you have learned the basicskills you need 不会走就想跑
A lot of language students want to run before they can walk.
很多学习语言的学生都好高骛远。
Examples from the Corpus
run before you can walk• I think too that she wants to run before she can walk.• Just don't try to run before you can walk.• Try to be honest with your use of the table and don't attempt to run before you can walk.