These present serious navigational hazards.
Some of them – again unsurprisingly – present "serious concerns".
Six generations after slavery's demise, such approaches present serious difficulties.
Still, Mr. Tenet said, "the coming year will present serious challenges".
"If we are not successful in eradication, this could present serious long-term costs for us".
The N.F.L. has seen how former athletes can present serious legal challenges.
Mr. Weber says that shipments of ornamental plants often present serious problems because they often carry the bug's eggs.
But even if they do join W.T.O., Russia's business and legal climate and backsliding on democracy will present serious obstacles.
Even though the council has freedom to label money funds a risk, its two main options present serious challenges.
Other economists – including this one – have argued that the large differences in productivity among the member economies present serious difficulties for a monetary union.
Projects by Olalekan B. Jeyifous, Todd Palmer, Emmanuel Pratt and Zevilla Jackson Preston present serious, penetrating analyses of Harlem's complex social and visual texture.
