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A boy's voice cracks (ie becomes deeper) at puberty.
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男孩在青春期嗓音改变（声音变粗）. |
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A boyish name, when you thought about it, not well matched to his behavior, his reputation as a grown man.
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这名字一看就是个小男孩的名字，与他现在成年男子的行为和名声不符。 |
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A bracing tonic.
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提神的补品 |
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A bracket will be installed within the transmissions to assure that the park pawl shaft remains properly in position.
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在变速器内安装保持架来确保驻车止动爪定位销处在正常位置。 |
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A brain decoder that worked on all brains still might not allow for telepathy on the order of a Vulcan mind meld in the Star Trek series, which enabled universal translation.
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一个可用在所有大脑的大脑解码器，还是无法做到科幻影集「星舰奇航」中瓦肯人「心灵融合」那样的精神感应，可以转译所有语言。 |
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A brain tempered hand coordination little game.
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一款锻炼手脑协调的小游戏。 |
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A brain-scanning machine analysed their reactions.
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脑扫描机分析其反映。 |
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A brake system is composed of the brake and its control mechanisms.
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制动系一般由制动器及其操纵机构构成。 |
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A branch and bound algorithm for solving a class of nonlinear 0-1 knapsack problems is proposed, in which branching is common 0-1 variables one and a better feasible solution is found by a simply integer heuristic method as well as a lower bound of the op
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摘要构造出了一类可分离非线性0-1背包问题的分枝定界算法，分枝的过程是普通的0-1变量分枝，用简单的取整启发式法确定更好的可行解；而在每个分枝结点处用线性松弛技术确定了它的子问题的一个线性规划松弛逼近，由此得到最优值的一个下界。 |
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A branch broke off in the wind.
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树枝被风折断了。 |
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A branch broke off the tree.
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一根树枝折断了。 |
