Chewing tobacco also may cause low sperm counts .

咀嚼烟草同样可以引起精子数目减少。

In some chewing gums ; not yet widely in use .

用于某些咀嚼口香糖中，并没有得到广泛应用。

Scientists say the diet of prehistoric humans probably required more chewing teeth .

科学家们表示，史前人类的饮食可能需要更多咀嚼齿。

Mckeith said chewing the parsley after meals is a good way to freshen breath .

麦基斯说在饭后咀嚼欧芹是一个清新口气的好办法。

Chewing our food very slowly and deliberately has several benefits that are often overlooked .

慢慢的细细的咀嚼我们的食物有许多经常被忽视的好处。