What's bad taste here is often essential there".
When fertilization is internal, willingness of the female to mate is often essential.
Because of some distinctive geographical and geological characteristics of the region, blending is often essential.
No one said international justice was easy, but it is often essential to ensure that atrocities cannot be committed with impunity.
At the same time, travel is often essential, particularly for service companies, many of whom anticipate more travel as they expand globally.
The raters, whose imprimatur is often essential for a security's success, say they are currently refusing favourable ratings to far more proposed issues than they endorse.
Such precision is often essential in the isochron method (see above) because of the small changes in relative daughter abundance that occur over geologic time.
As America's foreign-policy "realists" such as Mr Baker and Henry Kissinger have long argued, talking to foes is often essential.
Don Bachardy has continued to interpolate himself into his lover's story, and is often essential to it, but it is Isherwood's prose – fiction, diaries, essays and memoir – that holds the key to his genius, and guarantees his posterity.
The environmental movement recognizes that collaboration with financiers is often essential to advancing our work, but the important question for us is to what degree we should trust them to lead our movement.
Indeed, planning is often essential because enticing places to stay -- places that really make you feel you're in another world -- are heavily booked within a two-hour driving radius of New York.
