silk·weed /ˈsɪlkˌwid/
芳草屬植物
Silk·weed n. Bot. Any plant of the genera Asclepias and Acerates whose seed vessels contain a long, silky down; milkweed.
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silkweed
n : any of numerous plants of the genus Asclepias having milky
juice and pods that split open releasing seeds with downy
tufts [syn: milkweed]