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protocol的复数形式为：protocols...
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Llewelyn was mounting the stairs up into the keep.卢埃林登上台阶，走进城堡主楼。She lay at the bottom of the stairs, whimpering in pain.她躺在楼梯底部，痛得呜咽着。He picked up his suitcase and climbed the stairs.他拎起手提箱,爬上了楼梯....
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n.自明之理，老生常谈...
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n.自转动，自旋转...
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hyraid的音标：hyraid的英式发音音标为：['hɪreɪd]hyraid的美式发音音标为：['hɪreɪd]...
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Our superior technology is our ace in the hole.我们超众的技术是我们的法宝。That is the third ace that he has served this match.那是他在这场比赛中的第3次发球得分.The child came within an ace of being drowned.孩子差一点儿淹死了....
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thereby的音标：thereby的英式发音音标为：[ˌðeə'baɪ]thereby的美式发音音标为：[ˌðer'baɪ]...
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vt.取代，接替，更替，继任，将…免职，撤换vi.推迟行动v.废除，废弃...
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exuberated的音标：...
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Sean's a fast thinker, and he acts on impulse.肖恩是个思维敏捷、行事随兴的人。After lunch she decided on impulse to take a bath.午饭后她突然兴起，决定洗个澡。Many people act on impulse without counting the cost.很多人不考虑后果就莽撞行事。...
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“贴切”的拼音为：tiē qiè...
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置换...
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structured的音标：structured的英式发音音标为：['strʌktʃəd]structured的美式发音音标为：['strʌktʃəd]...
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create的第三人称单数（三单）为：creates...