缩短牙齿寿命
Shorten tooth life
以上为机器翻译结果，长、整句建议使用 人工翻译 。
你讨厌他的黄手指和黄牙齿；更严重的是，你知道在四十岁以后吸烟的他或她的寿命每年可能会缩短三个月。
You hate his yellowed fingers and teeth; even worse, you know that for every year someone smokes after age 40, his or her life will be shortened by three months.
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