普拉西德是即将发布的游戏中的一个角色。
研究人员说单翼旋转飞行器并不是个新生概念，它的第一次是在1952年由在普拉西德湖边的查尔斯麦克琴完成飞行。
The researchers noted that the concept of a single-wing rotating aircraft is not new, with the first such vehicle being flown in 1952 by Charles McCutchen near Lake Placid, New York.
研究人员说单翼旋转飞行器并不是个新生概念，它的第一次是在1952年由在普拉西德湖边的查尔斯麦克琴完成飞行。
The researchers noted that the concept of a single-wing rotating aircraft is not new, with the first such vehicle being flown in 1952 by Charles McCutchen near Lake Placid, New York.
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