Recent research by Peg Nopoulos, Jessica Wood and colleagues at the University of Iowa illustrates just how difficult it is to untangle nature and nurture, even at the level of brain structure.
派格·诺普洛斯、杰西卡·伍德以及他们的同事最近在爱荷华大学做了一项研究，结果显示，即使是从大脑结构上来分析，想要理清先天与后天的纠缠也是十分困难的。
Introduced different molecular weight PEG in chitosan by solvent casting method, the blending system had good compatibility, reached homogeneous phase of the thermodynamic level.
用溶液浇铸法在壳聚糖中引入的不同分子量的聚乙二醇，共混体系相容性好，实现了热力学水平上的均相。
The central bank let the currency reach 7.1413 per dollar on Thursday, the highest level since it scrapped a dollar peg in July 2005 and allowed it to float in managed bands.
在周二，央行让人民币达到7.1413元兑一个美元，是最高水平，自从2005年1月打破固定汇率让它在管理的程度内自由浮动以来。
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