ris·er 
(rīzər)
(rīzər)n.
1. One who rises, especially from sleep: a late riser.
2. The vertical part of a stair step.
3. A platform, as for elevating a group of people above a crowd, often arranged with similar platforms in tiers.
| 单词 | riser |
| 释义 | ris·er (rīzər)n. 1. One who rises, especially from sleep: a late riser. 2. The vertical part of a stair step. 3. A platform, as for elevating a group of people above a crowd, often arranged with similar platforms in tiers. |
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