The viability of rat glomerular endothelial cells was inhibited by ioversol in a concentration and time dependent manner.

非离子型低渗造影剂碘佛醇能显著降低大鼠肾小球内皮细胞存活率，并呈剂量和时间依赖性。

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The effects of fetal bovine serum (FBS) addition time, concentration and different culture systems on the developmental potentiality of bovine parthenogenetic embryos were observed.

试验研究了培养液中血清的添加时间和添加浓度及不同培养体系对黄牛孤雌胚胎体外发育潜力的影响。

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Precious little time, concentration, studying is a good way to learning.

惜时、专心、苦读是做学问的一个好方法。

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The rise on international production and demand has created more flexibility in supplying products to the world than ever before, but at the same time concentration of production for particular industries can lead to occasional shortages such as those currently occurring in HDDs.

FORBES: Fragility and Recovery of Digital Storage Supply Chains

But learning takes time and concentration, so now we get to claim peace and quiet as we drink wine and set up our mise en place, just like the guy on that cooking show and, if you think about it, just like our own fathers, back when they tinkered in the workshop or stopped by the corner pub on the way home.

WSJ: A Real Man's Place Is in the Kitchen by Daniel Duane

Avital of New Rochelle, Westchester County, spoke to students about his time in the concentration camps before being formally introduced to Lewis by Jeffrey Place, a social studies teacher.

WSJ: Holocaust survivor, liberator meet for first time