过去20多年的研究已经指出微量营养素的重要性—食物中发现的极少量的物质起着很大的作用。

Research over the past 20 years have pointed to the importance of micronutrients - substances found in small amounts in foods that make a big difference.

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另一条线索或许指出了信号追踪的重要性。

Another clue may have pointed to the importance of the signals trail.

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其它调查结果一致指出各种人际关系的重要性。

Other surveys consistently point to the importance of relationships.

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