a disaccharide
可数名词单数形式，前加不定冠词。
Sucrose is a disaccharide composed of glucose and fructose.
蔗糖是由葡萄糖和果糖组成的二糖。
双糖；二糖
由两个单糖结合而成的糖,如蔗糖、麦芽糖和乳糖。；任何一类完全水解后产生两个单糖分子的碳水化合物
A sugar (such as sucrose, maltose, or lactose) made up of two monosaccharides linked together
由两个单糖结合而成的糖,如蔗糖、麦芽糖和乳糖。
Any sugar, such as sucrose, maltose and lactose, consisting of two monosaccharides combined together.
任何一类完全水解后产生两个单糖分子的碳水化合物
any of a variety of carbohydrates that yield two monosaccharide molecules on complete hydrolysis
Sucrose is a common disaccharide found in many plants.
蔗糖是一种常见的二糖，存在于许多植物中。
用法提示：本句使用disaccharide的单数形式，作为主语补足语，表示一种二糖。
The body breaks down disaccharides into simple sugars during digestion.
消化过程中，身体将二糖分解为单糖。
用法提示：本句使用disaccharides的复数形式，作为动词break down的宾语。
Many dairy products contain lactose, which is a disaccharide.
许多乳制品含有乳糖，这是一种二糖。
用法提示：本句使用disaccharide的单数形式，作为表语，说明乳糖的种类。
可数名词单数形式，前加不定冠词。
Sucrose is a disaccharide composed of glucose and fructose.
蔗糖是由葡萄糖和果糖组成的二糖。
复数形式表示一类物质。
Common disaccharides include sucrose, lactose, and maltose.
常见的二糖包括蔗糖、乳糖和麦芽糖。
与 of 连用表示所属关系。
The hydrolysis of disaccharides yields monosaccharides.
二糖的水解产生单糖。
grammar · medium
易错句子Sucrose is a monosaccharide.
正确表达Sucrose is a disaccharide.
混淆了单糖和二糖的概念, 蔗糖是一种二糖, 由两个单糖分子组成。
grammar · medium
易错句子Starch is a disaccharide.
正确表达Starch is a polysaccharide.
混淆了二糖和多糖的概念, 淀粉是一种多糖, 由多个单糖分子组成。
与二糖混淆是因为词缀mono-和di-的区别，二糖由两个单糖分子组成。
与二糖混淆是因为词缀poly-和di-的区别，多糖是由多个单糖组成的长链分子。
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