另一个作用是保护——这也不像以前那么重要了，但是毛发仍然对身体的某些部位有好处，比如头部和眼睛周围。
The other is for protection—and again this isn't as significant as it was once, but hair does still benefit areas of the body such as the head and around the eyes.
在另一个实验中，研究人员给年老的老鼠脑部注入了一种药物来阻止它们脑部乙酰物质的流失，帮助它们的脑部产生乙酰作用，结果完全在研究人员预料之中，辅助记忆的基因发挥了作用，年老的老鼠也可以像幼鼠那样恢复对以前事情的记忆。
In additional experiments, the researchers injected a drug into the brains of older mice to counter the drop in acetyl tag attachment, or acetylation.
报告认为“扩大生物燃料的使用和生产对减少温室气体排放量所起的作用不一定像以前假设的那样。”
"Expanded use and production of biofuels will not necessarily contribute as much to reducing greenhouse gas emissions as was previously assumed," the report finds.
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