The phrase "their notion that" is correct and usable in written English.
It can be used when discussing someone's belief or idea about a particular subject.
Example: "Their notion that success is solely based on hard work is a common misconception."
Alternatives: "their belief that" or "their idea that".
Their notion that Iran could be like Japan, with nuclear technology but no bombs, ignores fundamental differences.
I simply watched my parents make dinner (sometimes beef bourguignon, more often burgers) and absorbed their notion that food was interesting and entertaining, not just fuel.
"It's obvious that Chris's race and size had something to do with their notion that he killed her," Roy McCowen said.
After the victory, the Rangers were 5-8-2-0 5-8-2-0 5-8-2-0 5-8-2-0n reinforced their notion that they had butn playing better than recent scores indominating
"It's pretty hard to understand how, when you see these Scuds falling on the innocent people of Aleppo, it's possible to take their notion that they're ready to have a dialogue very seriously".
I think that the Bush people probably started this polarization with their notion that you're either with us or against us, you're either a friend of the Bush family or an enemy.
He called their preservation "a romantic notion that may not be practical".
Accordingly, once the TO had elapsed, they maintained a clear expression in their choice for LLL, a notion that supports the gambling-like profile of these animals.
Their notion is that the soul exists throughout all time (before this earthly life as well as after it), with Latter-Day Saints advancing slowly to spiritual completion.
Japan is in such a straitjacket, their notion holds, that even if the Government takes decisive action, the yen will still plunge.
All this points to the third misconception by current apologists for atheism - their simplistic notion that a scientific approach to life somehow rules out a religious approach.
