Amidst, While doing, In the course of, Under the circumstances of
This expression is used to indicate the fact that the content of the following clause occurs while the situation or state of affairs described in the preceding clause continues. The preceding clause thus becomes the background or underlying situation for the following clause.
The particles 에도 and 에서도 can be added to the end of this expression to emphasize the contrasting nature of the preceding and following clauses. In such cases, 에 can also be omitted.
5 more sentences in the app — free account.