Democrats are unlikely to agree to extending the tax cuts and, despite the seeming bipartisan enthusiasm for the stimulus package, it could run into trouble on Capitol Hill. 民主黨人不太可能同意延長(cháng)減稅政策，盡管兩黨在刺激經(jīng)濟的一攬子政策上進(jìn)行了合作，但延長(cháng)減稅政策恨可能在國會(huì )遇到阻力。
Protein phosphorylation, which is mediated by enzymes, called protein kinases, is a major mechanism for transducing external stimuli into intracellular signals. 在這其中，把細胞外刺激轉導到細胞內是通過(guò)蛋白質(zhì)磷酸化來(lái)完成的，而蛋白質(zhì)磷酸化又被蛋白激酶介導。
