Sentence examples for it is challenged from inspiring English sources

It is challenged by its inability to explain the composition of natural gas, natural gases at thermodynamic equilibrium, and by the existence of a catalytic path to gas that better explains gas compositions.

Right now, Uber has a section of its team in San Francisco dedicated to shaping its service to the needs of Indian consumers, but it is actively working to open a base on the ground in Bangalore that will focus on local tweaks and modifications for India — where it is challenged by Ola, its local rival valued at $5 billion.

A longtime aerospace industry veteran said Northrop has also opened a modest B-21 engineering office at its plant in El Segundo, because it is challenged to find all the engineers it needs in Florida.

As the government has increasingly turned to credit programs to accomplish a diverse set of objectives, with its loan portfolio more than doubling since 2008, it is challenged to keep pace with an increasingly sophisticated financial marketplace, which could actually help reduce the federal lending role.

It is "challenged" but not "in crisis".

However, it is challenged by the spatial scaling errors between satellite and field measurements.

But it is challenging.

It is challenging to stay tobacco-free!

It is challenging!

It is challenging to interact with others.

And it was challenged".