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| 11. | yucca of southwestern United States and Mexico with a tall spike of creamy white flowers. |
| 美国西南和墨西哥的一种丝兰，具有高的乳白色总状花序。 |
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| 12. | marsh herb with a long spike of purple flowers; originally of Europe but now rampant in eastern United |
| 一种沼泽草本植物，有紫色花的长穗状花序；原产于欧洲，但现在已遍布美国东部。 |
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| 13. | a metal spike with a hole for a rope; mountaineers drive it into ice or rock to use as a hold. |
| 有系绳子的孔的金属钉；登山运动员把它楔入冰里或岩石里当作把手。 |
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