"Tax reform is vital but difficult," said Lawrence H. Summers, the former economic adviser to Mr. Obama and President Bill Clinton.
Few understood this vital but difficult union, with all its shades of grey, better than Juliet Wheldon, who has died of cancer aged 63.
"This is vital and difficult work and nothing should deter professionals from undertaking it, to protect vulnerable children across the UK".
Taken together, the departures could alter the tone of the administration's approach to China, one of its most vital but difficult relationships.
Most basically, the police, who have the vital and difficult job of upholding the law, stand accused of grave criminal acts, and it is hard to justify their being tolerated just because time has passed.
"Carrying out the vital, often difficult, work we do on behalf of the state, and the communities in which we live, all foster carers deserve to be working under fair terms and conditions, with fair remuneration and support".
It's a model compromise, mixing pro-business pragmatism with a commitment to protecting workers — future Americans — who do some of the country's most vital yet difficult jobs.
As public officials talk about rebuilding and restoring what Sandy destroyed, however, Mr. Cuomo is one of the few making a vital and difficult argument there's no point in going back to the status quo ante.
When solving a combinatorial problem using Constraint Programming (CP) or Satisfiability (SAT), modelling and formulation are vital and difficult tasks.
This educational relationship between the registrar and supervisor within the context of a community of practice is perhaps the most vital and difficult area to navigate [ 56].
