rotenone

/ˈroʊtəˌnoʊn/ /ˈroʊtənoʊn/

Meanings

noun

鱼藤酮，鱼藤精。

A toxic crystalline substance obtained from the roots of derris and related plants, widely used as an insecticide.

Examples :

"The gardener sprayed the roses with rotenone to kill the aphids. "

园丁在玫瑰花上喷洒了鱼藤酮，用来杀死蚜虫。

Related Words

sprayed verb

/spɹeɪd/

喷洒，喷射.

"The firemen sprayed the house."

消防员向房子喷水。

derris noun

/ˈdɛrɪs/ /ˈdɛrəs/

鱼藤

"The farmer cultivated derris along the fence line, hoping to harvest its roots for use as a natural insecticide. "

这位农民在篱笆边种植了鱼藤，希望收获它的根来用作天然杀虫剂。

gardener noun

/ˈɡɑːdnə/ /ˈɡɑɹdnɚ/

园丁，花匠。

""Ponder the fact that God has made you a gardener, to root out vice and to plant virtue." — St. Catherine of Siena"

想想吧，上帝让你成为了一位园丁，让你铲除恶习，播种美德。

insecticide noun

/ɪnˈsɛktɪˌsaɪd/

杀虫剂，灭虫药

"The farmer used insecticide to kill the bugs eating his crops. "

农民用了杀虫剂来杀死吃他庄稼的虫子。

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。

plants noun

/plɑːnts/ /plænts/

植物，草本植物

"The garden had a couple of trees, and a cluster of colourful plants around the border."

花园里有几棵树，边缘周围还有一簇簇色彩鲜艳的草本植物。

toxic adjective

/ˈtɒk.sɪk/ /ˈtɑk.sɪk/

有毒的，毒性的

"Tobacco smoke contains many toxic substances."

烟草烟雾中含有许多有毒物质。

obtained verb

/əbˈteɪnd/

获得，取得。

"She obtained her driver's license after passing the driving test. "

她通过了驾驶考试，获得了她的驾照。

widely adverb

/ˈwaɪdli/

广泛地，普遍地

"The new school policy was widely discussed by parents. "

新的学校政策受到了家长们的广泛讨论。

crystalline noun

/ˈkɹɪst.əl.aɪn/

结晶体，晶体。

"The jeweler carefully inspected each crystalline before setting it in the ring. "

珠宝匠在将每颗晶体镶嵌到戒指上之前，都仔细地检查了一遍。

aphids noun

/ˈeɪfɪdz/

蚜虫，腻虫

"The roses in the garden are covered in tiny green aphids that are sucking the sap from the leaves. "

花园里的玫瑰花上爬满了绿色的小蚜虫，它们正吸食叶子的汁液。

related verb

/ɹɪˈleɪtɪd/

讲述，叙述.

"Please relate the circumstances of your journey here today."

请你详细讲述一下你今天来这里的经过。