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German Research Association, said a press release issued a few days ago, the association funded the University of Nuremberg, Germany Erlanger special studies have shown that men the world over the past few decades to reduce the number of sperm may be related to light in a wide range of chemicals used as softeners o of the acid esters.

德国研究协会日前发布的新闻公报说，该协会资助德国厄兰格·纽伦堡大学进行的专项研究表明，过去几十年全球男性精子数量的减少可能与轻工业中广泛用作软化剂的化学品邻苯二甲酸酯有关。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。