Most of the new joiners were already observers on an ad hoc basis.

大部分新加入的永久观察员国或组织在加入前从某种意义上讲已经是观察员了。

But it's not a return to open ports. Italy remains insistent on European solidarity in terms of redistributing rescued migrants and not just on an ad hoc basis.

但这不是回归开放港口。在重新安置获救移民方面，意大利仍然坚持欧洲一体化，而不仅仅是权宜之计。