Sentence examples for principal challenges include from inspiring English sources
The principal challenges include the existence of a controller-in-the-loop and the absence of joint sensors for acceleration and velocity measurements.
Some of the principal challenges include dealing with cosmic rays in space, surface radiation on Mars, storms of dust or "fines" (particles that are smaller than dust), the effects of weightlessness and human factors including psychological issues.
Challenges include the pool of available talent.
These challenges include.
In a statement this month Fannie Mae said that it had conducted small-scale pilot programs and determined that principal reduction poses a number of challenges, "including significant technological and systems complexity and substantial cost without proven effectiveness".
Grace of Monaco faced additional challenges including lack of awareness of its principal character (relative to, say, last year's Diana) and even less for its main storyline (a tax dispute with Charles de Gaulle's France).
Service providers face challenges, including compatibility.
aTwenty-two fluid challenges included.
bTwenty-eight fluid challenges included.
It represents one of the principal challenges facing humanity in our day". The encyclical called for sweeping changes in politics, economics and lifestyles to confront the issue -- including moving away from fossil fuel use.
I think there are three principal challenges.
