飞机起降原理：重力与升力的精妙平衡RmjiN

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飞机起降原理：重力与升力的精妙平衡《浣溪沙·草偃云低渐合围》原文翻译及赏析_作者王国维草偃云低渐合围雕弓声急马如飞笑呼从骑载禽归万事不如身手好一生须惜少年时那能白首下书帷
《定风波·自春来》原文翻译及赏析_作者柳永自春来惨绿愁红芳心是事可可日上花梢莺穿柳带犹压香衾卧暖酥消腻云终日厌厌倦梳裹无那恨薄情一去音书无个早知恁么悔当初不把雕鞍锁向鸡窗只与蛮笺象管拘束教吟课镇相随莫抛躲针线闲拈伴伊坐和我免使年少光阴虚过

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