1. "The crux of the matter lies in the fact that..."（问题的关键在于……）
2. "It is imperative that we take effective measures to address this issue..."（我们迫切需要采取有效措施来解决这一问题……）
3. "In the wake of this phenomenon, a growing number of people are beginning to recognize the necessity of..."（随着这一现象的出现，越来越多的人开始认识到……的必要性）
4. "The advent of... has brought about both opportunities and challenges, which necessitate a careful balance of..."（……的出现既带来了机遇也带来了挑战，这需要我们谨慎地平衡……）
5. "A thorough understanding of... is crucial for us to navigate the complexities of..."（全面理解……对于我们应对……的复杂性至关重要）
6. "In light of the current situation, it is advisable to..."（鉴于当前形势，建议……）
7. "The significance of... cannot be overstated, as it is the cornerstone of..."（……的重要性不容忽视，因为它……的基础）
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