平均值和中位数的背离，进一步印证了上述趋势——一方面，研发人员数量平均值由上年的722人提升至731 人；另一方面，研发人员的中位数却从上年的216 人降至213 人。这意味着，少数研发密集型企业大量增聘研发人员，多数中小型企业的团队规模维持稳定或略有收缩。
The research, using data from more than 1.8 million people who were tracked over many years, found that vegetarians had a 21% lower risk of pancreatic cancer, a 12% lower risk of prostate cancer and a 9% lower risk of breast cancer compared with meat eaters. Combined, these cancers account for around a fifth of cancer deaths in the UK.，推荐阅读爱思助手下载最新版本获取更多信息
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Space & Astronomy