lactones

/ˈlæktoʊnz/

Meanings

noun

内酯，环酯。

A cyclic intramolecular ester derived from a hydroxy acid.

Examples :

"Many fragrances in perfumes and foods are due to lactones, ring-shaped molecules formed from hydroxy acids within the substance itself. "

许多香水和食物的香味都源于内酯（环酯），它们是羟基酸在物质内部形成的环状分子。

Related Words

hydroxy adjective

/haɪˈdrɒksi/ /haɪˈdrɑːksi/

羟基的，含羟基的

"Ethanol is a hydroxy compound used in hand sanitizers. "

乙醇是一种含羟基的化合物，常用于洗手液中。

perfumes noun

/ˈpɜrfjumz/ /ˈpɜrfjums/

香水，芬芳，香味

"The perfumes from the bakery filled the air, making the waiting room smell delicious. "

从面包房飘出的香味充满了整个房间，让等候室闻起来香气扑鼻。

substance noun

/ˈsʌbstəns/

物质, 材料

"The scientist carefully examined the substance to determine its chemical composition. "

科学家仔细检查了这种物质，以确定它的化学成分。

intramolecular adjective

/ˌɪntrəməˈlɛkjələr/ /ˌɪntrəməˈlɛkɪlər/

分子内的

"The scientist studied the intramolecular forces that caused the protein to fold into its specific shape. "

科学家研究了导致蛋白质折叠成特定形状的分子内作用力。

itself pronoun

/ɪtˈsɛlf/

它自己，自身。

"The door closed by itself"

门自己关上了。

derived verb

/dɪˈɹaɪvd/

获得，取得，源于。

"The student derived the answer to the math problem from the formula. "

这个学生从公式推导出了这道数学题的答案。

within adjective

/wɪˈθɪn/ /wɪðˈɪn/

本文的，此范围内的

"the within appeal"

本文的上诉

fragrances noun

/ˈfreɪɡrənsɪz/ /ˈfreɪɡrənsəs/

芳香，香味

"The bakery's delicious fragrances filled the air, tempting passersby. "

面包店里飘出诱人的芳香，路过的人都忍不住想进去看看。

shaped verb

/ʃeɪpt/

塑造，形成

"The potter shaped the clay into a beautiful vase. "

陶艺家用黏土塑造出一个漂亮的花瓶。

molecules noun

/ˈmɑːlɪkjuːlz/ /ˈmɒlɪkjuːlz/

分子

"Hydrogen chloride is a diatomic molecule, consisting of a hydrogen atom and a chlorine atom."

氯化氢是双原子分子，它由一个氢原子和一个氯原子构成。

formed verb

/fɔːmd/ /fɔɹmd/

形成，构成。

"The children formed a circle to play duck, duck, goose. "

孩子们为了玩“丢手绢”游戏，形成了一个圆圈。

cyclic adjective

/ˈsaɪklɪk/

周期性的，循环的。

"The weather had a cyclic pattern of rain and sun."

天气呈现出降雨和晴天的周期性循环。