stumbling block

Từ điển Việt Anh Việt 4in1 - English Vietnamese 4 in 1 Dictionary

ˈstumbling ˌblock BrE AmE noun [countable]
a problem or difficulty that stops you from achieving something
stumbling block to
The main stumbling block to starting new research is that we lack qualified people.

stumbling+blockhu

◎	[stumbling block]
〆	saying & slang
	■	obstacle, problem
		☆	A strip of land is in the way of peace. It is the stumbling block.