灯心为灯心草科植物灯心草的草心和根。生于海拔1600～3400m的河边、池旁、水沟、稻田旁、草地及沼泽潮湿处，分布于黑龙江、河南、湖南、广西、贵州、四川、云南等地。秋季采收，取茎用刀划开皮部，取出髓后捆扎成把，晒干备用。
他从他那条破旧的灯心绒裤子口袋里掏出了一串钥匙。
He took a bunch of keys from the pocket of his old corduroy trousers.
这些灯心绒裤多少钱？
索尔兹伯里主教结束了利用灯心草制成的戒指引诱女孩假婚的流行做法。
The bishop of Salisbury puts an end to the popular practice of seducing girls into mock marriage with rings made of rushes.
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