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词汇 riser
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riser n.

late 14c., risere, "rebel, insurgent, one who rises in revolt," agent noun from rise (v.). Meaning "one who rises" (from bed, in a certain manner) is from mid-15c. Meaning "upright face of a stair-step" is by 1738.

updated on August 31, 2021

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更新时间:2025/5/1 2:44:32