0 If discussions are high-level, very important people are involved in them. -- de alto nivel
1 involving important people -- de alto nivel
high-level negotiations negociaciones de alto nivel
2 complicated or advanced -- de alto nivel
So is a high-level infrastructure.
Secondly, a high-level meeting should not be a meeting of senior officials.
This high-level group will start work before this summer.
This has led to further non-partisan investigations and indictments of high-level corruption.
The secretive way in which high-level appointments are made has not helped.
We shall be organising a high-level meeting and a seminar.
