Scientific opinions are not carved on tablets of stone; they change over the years.科学观点并非一成不变;它们随着时间而改变。...the different challenges of their career, their need to change, to evolve, blah blah blah.他们的职业面临的各种不同的挑战，需要求变，需要...
The popular papers all have photo features on their inside pages.通俗报纸的内页都有照片专栏.He smiled back, which for an instant transfigured his unrevealing features.他回笑了一下，有那么一瞬间不动声色的脸上焕发出容光。Your camcorder should have these basic f...
Young conductors earn their spurs in a small orchestra or opera house.年轻的指挥家们在小乐队或小歌剧院里崭露头角。He was wearing riding pants, high boots, and spurs.他穿着马裤和长筒靴，靴上带着马刺。Edison won his spurs as an inventor while rather young.爱迪生很年...