The logic is post hoc ergo propter hoc.

这个逻辑完全是个谬误。

No executives make any ad hoc decisions.

没有高管能做出任何临时决定。

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。

I also do a couple of Ad-Hoc jobs which are much shorter projects.

我也做一些点对点的工作，这些项目的耗时较短。

So this is a clear example of a post hoc construction.

所以这是事后构建的一个明显例子。

Ellenor and I have formed an ad hoc management committee.

Ellenor和我组成一个特别管理委员会。

The investigation necessitated ad hoc arrangements.

调查需要 临时安排。

In the past five months, more than 500 Syrian refugees have traveled to this ad hoc camp in the middle of a bean field.

在过去的5个月里, 超过500名叙利亚难民前往这个位于大豆地中的临时营地。

Well, in a pinch can't my Rouquayrol tank supply me with more? All I have to do is draw it from an ad hoc spigot.

不错，但我带有卢格罗尔瓶，不是能按需要随时供应空气吗? 只要按需要装上一个开关龙头就够了。

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。