Hxen.com's tips：Every day persisted can learn English well!-->■Learn English Everyday■
citrus – n. a juicy fruit that has a thick skin and that comes from a tree or shrub that grows in warm areas
lemon – n. a yellow citrus fruit that has a sour taste
grapefruit – n. a large yellow citrus fruit
chronic – adj. continuing or occurring again and again for a long time
obesity – n. fat in a way that is unhealthy
inflammation – n. a condition in which a part of your body becomes red, swollen, and painful
pill – n. a small, rounded object that you swallow and that contains medicine or vitamins
