Sentence examples for obstacles include the need from inspiring English sources

Other obstacles include the need for appropriate measurement tool, proper study design to minimize bias and confounding, difficulty in recruiting participants and the need for a large sample size as some reproductive health outcomes are rare [ 2].

In addition to the culture shock, they will face innumerable obstacles, including the need to learn an entirely new language.

The obstacles include the effects of construction, as well as residents' expected consumption of meat (which raises the footprint because animals need grain).

Possible obstacles include the cost and complexity of assembly [ 35].

Obstacles to this approach include the need for precise temporal stimulation of functionally related neurons at dispersed locations.

Samsung has already published one story, Most wonderful place to be, showing how the storytelling will work: Obstacles to the technology catching on include: the need for the parent to have a Gear VR headset with them, and the child to have a Google Cardboard headset; and an ongoing debate about whether children should be encouraged to use VR headsets at all.

Some potential obstacles to applying the reverse genetics approach include the need for qualified cells for virus production and intellectual property for this technique.

So far, obstacles to producing hydrogen-powered fuel cell vehicles include the need to create an onboard hydrogen storage system that is light, yet still has the strength to withstand a crash.

Ms. Boyd noted the obstacles, including the Obama campaign's reluctance to sign on emphatically.

But she added that cross-channeling is often an overused buzzword that presents many obstacles for retailers, including the need to update organizational systems to integrate in-store operations with Internet retailing.

Several factors act as HIV policy implementation obstacles in Vietnam including the need for improved salaries and more training opportunities for health staff; but strategies to improve staff work morale by valuing their work could help considerably to improve their work motivation.