The fact that there is a hub present at all suggests this is SIMM level 3 since we already have some opportunity to re-use the integration.

这里有 hub 出现的事实恰恰表明了这是 SIMM 级别 3，因为我们已经有了某种机会来重用这个集成。

youdao

One survey carried out during the summer suggested that a majority of New Yorkers wanted it to be at ground level so it is easier to cross the site and reach the planned transportation hub, shops and office buildings.

BBC: The battle over Ground Zero