a scientific breakthrough的用法和样例：
例句
- Some of the newcomers may have surpassed their teachers in scientific achievement,but that only makes the teachers'contributions all the more precious.
尽管有些新人在科学成就上超过了老师，他们老师的功绩还是不可磨灭的。 - His scientific achievements included accurate calculations of latitude and longitude and explanations of natural springs by the laws of hydrostatics.
其科学成就包括对纬度和经度的精确计算，用流体静力学定律对天然泉水作了解释。
