But it was, ironically, not until the inventionof the laser in 1960 that understanding the quantum nature of optics became crucial.
但是，具有讽刺意义的是，直到1960年激光发明后，认识光学的量子本质才变得至关重要。
2
Science is knowledge, honestly can't rely on luck to invention, do not understand the natureof a question, is meets opportunity is also vain.
科学是老老实实的学问，不可能靠运气来创造发明，对一个问题的本质不了解，就是碰上机会也是枉然。
3
The widespread use of... has dramatically reshaped the natureof the society meanwhile its invention was a landmark in the technological advances of humans.