0 the situation in which large numbers of educated and very skilled people leave their own country to live and work in another one where pay and conditions are better -- （国家的）人才流失，人才外流
Without such a vision 'brain drain' is difficult to avoid.
Contemporary instances of conflicting loyalties might be characterised as an internal ' brain drain ', from public to private medicine.
The so-called "brain drain" would naturally not be curbed, it would indeed be encouraged; it would have to be.
This is already being reflected in a kind of brain drain.
The brain drain has begun and it will accelerate.
There seems to be a kind of reverse brain drain from developing countries to the developed world, of which we are the beneficiaries.
I shall now say a few brief words about morale, which has also been mentioned, and the possibility of a brain drain.
All this could lead to a brain drain on the spot; a brain drain among scientists continuing to work here in this country.
