Darby was looking for a way to improve iron when he hit upon the idea of smelting it with coke instead of charcoal.达比一直在寻找改善铁质的方法，他猛然想到可以不用木炭熔炼，而改用焦炭。That morning we fired our first kiln of charcoal.那天上午，我们烧了我们的第一窑木炭。Chu...
He replaced the boiler when the last one began to spout flames.原来的锅炉开始往外喷火苗后他便换了个新的。He used his column to spout ill-informed criticism of the Scots rugby team.他根本不了解苏格兰橄榄球队，却在自己的专栏上对其大加抨击。You're the kind of person w...
There are several reasons some mothers may not be able to breastfeed.一些母亲不能够提供母乳喂养的原因有很多.It also lets the baby breastfeed at any time.也可以在任何时候哺乳幼仔.If you are not planning on breastfeed, you have to decide on a formula.如果...