Colonel Davis's unit -- First Battalion, Seventh Marines, First Marine Division -- was given the enormously challenging task of rescuing marines who were trapped in deep snows astride a vital mountain pass.
In the Caspian Sea, an international consortium is exploring the Kashagan oil and gas field, a mega-project that the consortium itself describes as an enormously challenging endeavour.
McLaren team boss Martin Whitmarsh said: "It's an enormously challenging circuit.
Bioresponsive cytosolic nanobased multidelivery has been emerging as an enormously challenging novel concept due to the intrinsic protective barriers of the cells and hardly controllable performances of nanomaterials.
Tim Geithner: I worry because this is still an enormously challenging --.
Describing the content of an image is a challenging task.
Managing and controlling such a network is a challenging task.
Optimal control of a CSTR represents a challenging task.
Selecting an implementation framework is a challenging task.
It must be an incredibly challenging task.
