greatly, largely 11 大大 [-] dàdà (greatly-reduplication) greatly, largely: ~减少 largely decrease || ~不同 large difference || ~提高了效率 (xiàolǜ) a large increase in efficiency ' greatly, largely 11 大大 [-] dàdà (greatly-reduplication) greatly, largely: ~减少 largely decrease || ~不同 large difference || ~提高了效率 (xiàolǜ) a large increase in efficiency '