只有仔细扎实地寻找砷的来源才能提供这方面的资料.Only a careful physical search for a source of arsenic can provide this information.砷的溶解度取决于其化学形态和废水的PH值.The soluble concentration of arsenic is dependent upon both chemical form and wastewater PH...
玛丽把头向后仰，以便能看到他。Mari tilted her head back so that she could look at him.她保留了许多副本以便作进一步的注解。She retained a number of copies for further annotation.手边放一本便笺簿，以便有问题时随时记下。Keep a pad handy to jot down queries as they occur....
By stimulating the economy, we're going to put people to work.我们将通过刺激经济让人们实现就业。I'm not sure if the argu-ment holds up, but it's stimulating.我不能肯定该论点是否经得起检验，但它很有新意。The atmosphere was always stimulating.气氛总是...