碳化合物氧化后必然会产生二氧化碳。Carbon dioxide is a necessary result of the oxidation of carbon compounds.氧化胆固醇可能是造成动脉堵塞的元凶。Oxidized cholesterol may be responsible for furring up the arteries.碳、氢、氧化合形成碳水化合物和脂肪。Carbon, hydrogen and oxyg...
Even clever people are not terribly clever when put on the spot.即便是聪明人在面对难题时也未必就能表现得特别聪明。The doctor was on the spot a few minutes after the accident.医生在事故发生几分钟后就赶到现场了.He discussed business and concluded transactions with...