而国外一项最新研究发现，牙龈健康可能也意味着肺健康。
Now, new research suggests that healthy gums might also mean healthy lungs.
但最新研究发现，中风和心脏病很可能已经困扰了人类几千年。
But recent discoveries suggest that strokes and heart attacks may have been bedeviling humans for millenia.
一项最新研究发现，夫妻双方在必要的时候斗斗嘴有益于身体健康。
A good fight with your spouse could be good for the health, a new study has found.
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