il problema principale è che sono s

il problema principale è che sono stati condotti diversi studi riguardo l'analisi 'costi-benefici' della realizzazione di quest'opera enorme, ma, come spesso succede, non sono tutte concordanti e convergenti.

Risultati (Inglese) 1:

the main problem is that several studies have been conducted regarding the cost-benefit analysis of the realization of this work but, as often happens, they are not all in agreement and convergence.

Risultati (Inglese) 2:

the main problem is that several studies have been conducted regarding the analysis 'cost-benefit' of this work of great achievement, but, as often happens, they are not all in agreement and convergent.

Risultati (Inglese) 3:

The%20problem%20main%20%C3%A8%20that%20are%20Member%20ducts%20different%20studies%20regard%20l%27analysis%20%27cost-benefits%27%20of%20embodiment%20of%20This%27opera%20huge,%20ma,%20as%20often%20happens,%20not%20are%20all%20concordant%20e%20converge.%5E