元素可以分为具有相似性质的组。

The best way to predict your future is to create it.

Innovation in medical technology requires a deep understanding of both the scientific principles and the practical needs of patients.

If you shed tears when you miss the sun,you also miss the stars.

译文：人生得一知己必须要对知己问心无愧，读书人多读书，一定要学以致用。赏析：做人做事凭着良心方能服众，才不会招致怨愤和祸患。读书的目的就是学以致用，我们不能读死书，死读书，我们要让书中的知识来指导我们的生活。

采石场中的每一个挑战都是创新的机会。