在。。。中 / 在。。。下 / 在。。。上 It is probably quite likely that someone has asked this question before, however the search function doesn't throw anything up and it is actually quite difficult to search for!

Simply put, I have noticed the sentence structures 在...中 / 在...下 / 在...上 and am not entirely sure what they mean， though I can limit their possible meanings from context. For example:

在中国和印度两个大国的努力下 must mean something like "due to" or "as a result of" or "in the process of" or "thanks to".

However, I don't know what it is precisely enough to do use it confidently myself. The same goes for 在...中 and 在...上.

If someone fancies giving a bit of an insight, it'd be much appreciated!

Hashamyim
As I understand them, they are used very similar to how you use them in English.

在．．．中 is like "during", "in the middle of", or just "in"

在．．．下 is like "under" ("Under the rule of...", "Under the stress of...", "Under the efforts of China and India...")

在．．．上 is like "on the..." ("On the merits of...", "On the basis of...")