标题不是图的户口本,是图的广告语。写“Figure 1. Expression levels of gene X”,不如写“Figure 1. Gene X upregulation correlates with tumor grade in cohort A”。动词必须有力,“correlates”“distinguishes”“predicts”,别用“shows”“presents”。限定词要实,“in human CRC tissues”比“in samples”强十倍。删掉所有“a”“an”“the”,除非必要。长度压到两行内,第二行开头别空格。