人们早已知道，如果材料的表面积足够大，可引起催化反应。It had been known for some time that chemical reactions can be catalyzed by materials with large surface areas.它们对被它们催化的反应有很强的专一性.They are highly specific for the reactions that they catalyze.在...
We can never promise to sail anywhere in particular, because the weather might militate against it.天有不测风云，所以我们永远都无法保证会航行到哪个地方。Two factors may well militate against these benefits.有两个因素会妨碍这种“有益性”的产业.This would certainly m...
经济指标比预期的好。The economic indicators are better than expected.经营目的和指标business goals and targets黃金价格常常被看作是通货膨胀的指标.Gold prices are often seen as an indicator of inflation....