音标：['milkwi:d] ；

n. 马利筋
[医] 马利筋属植物

n. any of numerous plants of the genus Asclepias having milky juice and pods that split open releasing seeds with downy tufts
n. annual Eurasian sow thistle with soft spiny leaves and rayed yellow flower heads

词型变化：名词复数形式 : milkweeds

词性分布：

名词100%

【近义词】

Sonchus oleraceus苦苣菜
silkweed芳草属植物

英语听力—环球英语 1368 Save The Butterflies

Voice 1 Welcome to Spotlight. Im Joshua Leo. Voice 2 And Im Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 3 I was watching a butterfly the other

发表于:2018-12-19 / 阅读(210) / 评论(0)

环球英语 Spotlight

【英语时差8,16】想赚钱？来投资乳草

That'true. monarch butterflies lay their eggs on milkweed plants.The caterpillars feed on milkweed, from which they extract substances called cardenolides, a type of chemical that can cause heart arrhythmia. This toxin doesnt affect the caterpillars

发表于:2018-12-27 / 阅读(182) / 评论(0)

英语时差8，16

Young Students Build a Station for Monarch Butterflies

Students at P.B. Smith Elementary Schools ecology club are learning about the life and migration of monarch butterflies. They learn in the classroom about the butterflys need for certain plants. They learn scientific words for the stages of a butterf

发表于:2019-01-03 / 阅读(569) / 评论(0)

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英语听力—环球英语 1225 Friend or Enemy?

Voice 1 Welcome to Spotlight. Im Adam Navis. Voice 2 And Im Liz Waid. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Human life is full of friends and en

发表于:2019-02-14 / 阅读(230) / 评论(0)

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Planting Milkweed for Monarchs? Make Sure it's Native Monarch butterflies depend on milkweed. They lay their eggs on milkweed, and their caterpillars eat only the leaves of the plant. No milkweed means no monarchs. So the best way to help declining m

发表于:2019-02-14 / 阅读(224) / 评论(0)

2018年科学美国人4月

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