text_1: 医师 可 建议 患者 花 数月 时间 逐渐 缩短 每日 进食 的 时间 窗 , 目标 是 每日 断食 16 ~ 18 小时 ( 图 4 ) .
  
text_2: physicians can advise patients to gradually , over a period of several months , reduce the time window during which they consume food each day , with the goal of fasting for 16 to 18 hours a day ( Figure 4 ) .
  