1.at least 至少
例句:At least it should be.
至少应该是极少的 。
2.instead of 而不是
例句:Why don't you play football instead of just looking on?
你为什么不参加踢足球而只是看热闹?
3.physical activity 体育活动
例句:Physical activity is an important factor in maintaining fitness.
进行体育活动是保持身体健康的一个重要因素 。
4.chronic disease 慢性病
例句:I had hyperplasia, anemia, and lymphedema from a chronic disease.
我的慢性病引起了组织增生、贫血和淋巴水肿 。