1. A curtain at the back of the stage opened. Six young girls appeared,
    舞台后部的帷幕打开了，走出六位年轻女孩子。

2. Yet a great many processes depending on such research are sought for with complete secrecy until the stage at which patents can be taken out.
    然而，依赖这种研究的很多工艺程序是在完全保密的情况下进行的，直到可以取得专利权的阶段为止。

3. Certain serious diseases can be successfully treated if detected in an incipient stage.
    某些危险的疾病如果早期发现，就可以成功地治疗。

4. Chaplin quit Britain for good in 1913 when he journeyed to America with a group of performers to do his comedy act on the stage
    卓别林在1913年永久地离开了英国，与一些演员一起启程到美国进行舞台喜剧表演。

5. In the last act , a gaoler would always come on to the stage with a letter which he would hand to the prisoner.
    在最后一幕里，一名监狱看守总是拿着一封要交给这个囚犯的信上台。

6. In spite of this, she often appears on the stage as a young girl.
    尽管如此，她还常在舞台上扮演少女。

7. In spite of this, she often appears on the stage as a young girl.
    尽管如此，她还常在舞台上扮演少女。

8. In the last act, a gaoler would always come on to the stage with a letter which he would hand to the prisoner.
    在最后一幕中，狱卒手持一封信上场，然后将信交给狱中那位贵族。

9. It took him four years to stage this elaborate joke simply to prove that critics do not always know what they are talking about.
    他花了4年时间策划这出精心设计的闹剧，只是想证明评论家们有时并不解他们所谈论的事情。

10. Which I found most helpful on the cross-country journey, but which I did not think I should need on the last stage.
    在乡间行车途中，我觉得它非常有用，但快到家了，我倒觉得它没什么用了。