Ainda não temos significados para "very unproductive".
1He made a study of bees in Connemara and found them to be very unproductive.
2The settlers at this latter place appeared to have very unproductive crops, having sown their wheat late.
3It would appear that some parts of his lordship's estates, were barren, and in a very unproductive condition.
4But to reduce it to a debate about a single mine is in my view very unproductive, it does nothing to advance the debate.
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