他用颤抖的手写下那些字.He traced the words with a shaking hand.我永远都不会忘记那个病人脸上的表情,还有他颤抖的手.I will never forget the look on the patient's face, the tremble in his hand.他尽力隐藏悲痛, 但是颤抖的声音却无疑表明了一切.He tried to conceal his distress, bu...
These reactions can conserve three of every four carbons diverted to glycolate by forming triose.这些反应能把四分之三的乙醇酸的碳保存在三碳糖中.Glycolate has long been recognized as an early and important product of photosynthesis.乙醇酸早就被认为是光合作...