研究:多微笑可以讓你多活七年

        Experts studied 230 pictures of major league baseball players printed in the 1952 Baseball Register.

　　專家們從1952年的一些主要的棒球聯(lián)盟中研究了230名注冊(cè)棒球隊(duì)員的照片。

　　The researchers ranked each player according to whether they had no smile at all, a partial smile, where only the muscles around the mouth were involved, or a full-blown smile that featured a toothy grin, raised cheeks and creases around the eyes. The researchers then compared the photos with the life span of each player.

　　專家們按隊(duì)員們的笑容進(jìn)行等級(jí)分類，分別是“一點(diǎn)都不笑”，“笑了一點(diǎn)兒”，“微笑時(shí)嘴部肌肉有抽動(dòng)”或是“笑的合不攏嘴”，以及“揚(yáng)起臉，眼睛都笑出了皺紋”等這幾個(gè)分類。然后他們把這些照片與隊(duì)員們的壽命進(jìn)行了比較。