提神物

例句：

1. 1. After a long day at work, I need a cup of coffee to stay awake.
   工作了一整天后，我需要一杯咖啡来保持清醒。
2. 2. The energy drink gave me the boost I needed to finish the marathon.
   那个能量饮料给了我完成马拉松所需的动力。
3. 3. Her new hobby is painting, which helps her stay focused and energized.
   她的新爱好是绘画，这帮助她保持专注和精力充沛。