显而易见，这幅图旨在揭示一个事实，即，加强文化交流既有利于中国，也有利于整个世界。
Apparently, the picture aims at revealing a fact that enhancing the cultural exchange is beneficial to both China and the whole world.
华盛顿报道，研究人员发现一种能够帮助大脑生成新细胞的药物，这项研究可能有利于改进治疗阿兹·海默症(即老年痴呆症)的实验性药物。
WASHINGTON - Researchers have found a drug that can help the brain grow new cells and said their study may lead to ways to improve experimental Alzheimer's drugs.
而对于选择性，前者提高，后者则会导致降低，即控制反应扩散性能有利于提高催化选择性。
A high flow rate and pressure of hydrogen was in favor of the catalytic reduction of nitrate, but not benefit for the selectivity.
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