一项新研究表明，刷牙不仅可以让你拥有一口珍珠白，也可以降低你心脏病的发生几率。
Brushing your teeth is not only good for your pearly whites, it also decreases your chances of suffering a heart attack, a new study indicates.
锥形笼养殖的企鹅珍珠贝左壳较易感染多毛类寄生虫病。
The left-shell of Pteria penguin reared in cone cage was liable to infection of polychaete verminosis.
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