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nicotine

/ˈnɪkətiːn/

Meanings
noun

尼古丁

An alkaloid (C10H14N2), commonly occurring in the tobacco plant. In small doses it is a habit-forming stimulant; in larger doses it is toxic and is often used in insecticides.

Examples :

"My grandfather used to smoke cigarettes, and nicotine was a major reason he struggled to quit. "
我爷爷以前抽烟，而尼古丁是他戒烟路上最大的阻碍之一。
compound substance chemistry medicine plant insect biology

Related Words

Illustration forming

forming verb

/ˈfɔːmɪŋ/ /ˈfɔɹmɪŋ/

形成，构成

"Clouds were forming interesting shapes in the sky. "

天空中云朵正在形成有趣的形状。

Illustration occurring

occurring verb

/əˈkɜːɹɪŋ/ /əˈkɝɪŋ/

发生，出现。

"The liftoff will occur in exactly twelve seconds."

起飞将在精确的十二秒后发生。

Illustration stimulant

stimulant noun

/ˈstɪmjələnt/ /ˈstɪmjʊlənt/

兴奋剂，刺激物

"Coffee is a stimulant that helps many students stay awake during late-night study sessions. "

咖啡是一种刺激物，很多学生靠它在深夜学习时保持清醒。

Illustration larger

larger adjective

/ˈlɑː.d͡ʒə/ /ˈlɑɹ.d͡ʒɚ/

更大，较大。

"Russia is a large country.   The fruit-fly has large eyes for its body size.   He has a large collection of stamps."

俄罗斯是个大国。果蝇就身体而言有很大的眼睛。他有大量的邮票收藏。

Illustration cigarettes

cigarettes noun

/ˌsɪɡəˈrɛts/ /ˌsɪɡəˈrɛtəs/

香烟，卷烟

"My grandfather used to keep a pack of cigarettes in his shirt pocket. "

我爷爷过去常常在衬衫口袋里放一包香烟。

Illustration struggled

struggled verb

/ˈstɹʌɡl̩d/

挣扎，奋斗，抗争。

"During the centuries, the people of Ireland struggled constantly to assert their right to govern themselves."

几个世纪以来，爱尔兰人民一直在不断抗争，以争取他们的自治权。

Illustration alkaloid

alkaloid noun

/ˈæl.kə.lɔɪd/

生物碱

"The coffee bean contains caffeine, which is a stimulating alkaloid. "

咖啡豆含有咖啡因，咖啡因是一种具有刺激作用的生物碱。

Illustration commonly

commonly adverb

/ˈkɒmənli/ /ˈkɑmənli/

通常，一般，普遍地

"People commonly eat breakfast before going to school. "

人们通常在上学前吃早餐。

Illustration insecticides

insecticides noun

/ɪnˈsɛktɪsaɪdz/

杀虫剂，杀虫药。

"Farmers use insecticides to protect their crops from being eaten by bugs. "

农民使用杀虫剂来保护他们的庄稼，防止被虫子吃掉。

Illustration addicted

addicted verb

/əˈdɪktɪd/

交付，判给

"The court ruled that the company would be added to the list of companies affected by the new law. "

法院裁定将该公司交付给受新法律影响的公司名单之中。

Illustration grandfather

grandfather noun

/ˈɡɹæn(d)ˌfɑːðə(r)/ /ˈɡɹæn(d)ˌfɑðɚ/

爷爷，外公

"My grandfather helped me with my math homework. "

我的爷爷帮我做了数学作业。

Illustration tobacco

tobacco noun

/təˈbækoʊ/

烟草, 菸草。

"The farmer planted several species of tobacco in his field. "

那位农夫在他的田里种植了好几种烟草。