What causes a beer belly?
When you drink beer, your liver has to go into overdrive to detoxify the alcohol. Now add a few packets of crisps to the equation, maybe some peanuts and those calories are there to stay. Beer itself is pretty calorific stuff, to the tune of around 150 calories a unit so why beer makes you fat, well that starts to seem obvious.
喝啤酒的时候，肝脏要加速工作以分解酒精。如果拿几包如花生等的香脆零食来下酒，热量方程式的右边卡路里就更多了。啤酒本身是高热量饮料，热量高达150卡路里每酒精单位，这就是喝啤酒会导致肥胖的第一个原因。
Now why does it give you a beer belly specifically? Well the answer is down to two things apparently - gender and age. After about the age of 35 most men' *** etaboli *** s start to slow down. While men tend to put weight on their...bellies, women's fat stores monly go on their backside and hips.
具体说来，啤酒肚到底是如何形成的呢?看来有两个因素——性别和年龄。男性一过了35岁，新陈代谢就开始减慢，脂肪就会囤积在肚子上，而女性的脂肪则通常囤积在臀部和髋部。
【语言点解析】
1. beer belly 啤酒肚，也叫beer gut。belly肚子，bell钟，ball球，bullet子弹，billiards台球，这些单词都含有b...ll的组合，可以认为它们都和"圆"相关。
【例】He was short and fat, with a large beer belly. 他又矮又胖，挺着个大大的啤酒肚。
(来源：Collins COBUILD Advanced Learner's Dictionary 5th Edition)
2. go into overdrive 加速;卖力
【例】She always goes into overdrive before the holidays. 她总是在放假前特别努力。
(来源：Oxford Advanced Learner's English-Chinese Dictionary)
3. detoxify 清除毒素;解毒。toxic是"有毒的"，de-代表除去，如defrost除霜 = de除去 + frost霜，decode解码 = de除去 + code码。
【例】detoxify the bloodstream 清除血液中的毒素
(来源：Oxford Advanced Learner's English-Chinese Dictionary)
4. to the tune of 多达;高达
【例】Canada is funding the programme to the tune of $ 30 million. 加拿大为这个项目拨的款多达3000万美元。
(来源：Longman Dictionary of Contemporary English)
5. specifically 具体来说;确切地说
【例】We've been married now for over thirty years, specifically since 1972. 到现在我们结婚都30年了，具体来说是1972年结的。
(来源：MacMillan English Dictionary - American)
6. metaboli *** 新陈代谢
【例】Exercise is supposed to speed up your metaboli *** . 锻炼身体能加快新陈代谢。
(来源：Cambridge Advanced Learner's Dictionary)