But an important lesson from the last 50 years is that when it comes to improving heart health, it is important to look beyond the medicine cabinet.
而过去50年来得到的最重要的教训是：要增进心脏健康，功夫在药物以外。
The lesson of the past 50 years, however, is that the more humanity discovers about space, the rarer and more precious life on Earth seems.
50年的空间探索告诉我们，人类对宇宙了解得越多，地球上的生命就越显珍贵。
Next year will mark 50 years since China taught a military lesson to India. Will history repeat itself after 50 years?
明年是中国痛扁印度50周年纪念，历史会在50年之后重演吗？
Next year will mark 50 years since China taught a military lesson to India. Will history repeat itself after 50 years?
明年是中国痛扁印度50周年纪念，历史会在50年之后重演吗？
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