【英语时差8,16】历史最悠久的甜味剂（上）

Honey has been around for a very long time. Cave paintings in Spain from over ten thousand years ago show people harvesting honey. Today honey is mostly used for its distinctive¹ flavor, but for baking it has another advantage as well: baked goods made with honey take longer to get stale. Honey helps baked goods stay fresh longer because, unlike common table sugar, honey is made of two so-called “simple” sugars: glucose² and fructose. Table sugar also has glucose and fructose, but they’re chemically bonded³ together in a double sugar called “sucrose.” Having two single sugars instead of one double sugar means that ounce-for-ounce honey contains more sugar molecules⁴, which is why honey is also a little sweeter than table sugar.

1 distinctive   

adj.特别的，有特色的，与众不同的

参考例句：

• She has a very distinctive way of walking.她走路的样子与别人很不相同。
• This bird has several distinctive features.这个鸟具有几种突出的特征。

2 glucose   

n.葡萄糖

参考例句：

• I gave him an extra dose of glucose to pep him up.我给他多注射了一剂葡萄糖以增强他的活力。
• The doctor injected glucose into his patient's veins.医生将葡萄糖注入病人的静脉。

3 bonded   

n.有担保的，保税的，粘合的

参考例句：

• The whisky was taken to bonded warehouses at Port Dundee.威士忌酒已送到邓迪港的保稅仓库。
• This adhesive must be applied to both surfaces which are to be bonded together.要粘接的两个面都必须涂上这种黏合剂。

4 molecules   

分子( molecule的名词复数 )

参考例句：

• The structure of molecules can be seen under an electron microscope. 分子的结构可在电子显微镜下观察到。
• Inside the reactor the large molecules are cracked into smaller molecules. 在反应堆里，大分子裂变为小分子。