CNN news 2009-12-14 加文本 (额外篇)
2009-12-14来源:和谐英语
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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.
chill out冷静下来，别紧张，放松一下
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