CNN news 2009-12-14 加文本 (额外篇)
日期:2009-12-14
1.All forms of exercise help people to lighten up, but Smith says aerobic exercise may be the most effective.
lighten up放松,不要生气
例句：She is always trying to get her husband to lighten up.
她总是尽力使丈夫心情轻松愉快。
2.You don't have to break a major sweat to chill out with exercise.