The phrase "a hurdle which" is correct and usable in written English.
It can be used when referring to a specific obstacle or challenge that needs to be overcome.
Example: "The project faced a hurdle which delayed its completion by several months."
Alternatives: "an obstacle that" or "a challenge which".
Because health insurance is regulated in each state, insurers must be licensed in the state where they sell policies, a hurdle which critics say limits the number of insurance companies competing in a given state.
But all these theological somersaults suggest that religion may be as much a hurdle, which the perpetrators of "martyrdom operations" need to overcome, as a motive for their violence.
It is just not the case that the exit requirement is a hurdle which only enables highly English proficient applicants to enter the workforce.
It was a hurdle which proved hard to overcome in each of the three years Garcia has coached at Burroughs.
Those who would call the Mormon transhumanists a cult face a major hurdle, which is that none of them ever seem to agree on anything.
But a referendum has the potential to be a positive hurdle, which if cleared could construct a broad coalition in support of peace.
A third hurdle, which also represent a limitation of our results, was that criteria on waiting times and delays are based on consensus among experts and not on standards derived from practice guidelines with a high level of evidence, which are normally used to construct QIs.
He's a three-year-old taking on older rivals in a handicap hurdle, which is pretty rare, but he might be up to it on a decent surface.
However, the ability to produce sufficient virus exclusively using deer mice may present a logistical hurdle, which potentially may be surmounted by growing SVN in deer mouse cells.
"And Google has an additional hurdle, which is that some broadcasters and TV manufacturers are particularly nervous about getting into bed with it because they fear being disintermediated - in other words undermined - because Google would now be controlling the interface".
When we set unrealistic expectations we manufacture unnecessary disappointment that we then have to waste our precious energy overcoming--it's an additional hurdle which we don't need right now.
