Although scientists made advances with red LEDs, creating bright blue and green LEDs proved much more difficult.
尽管科学家在红色LED方面有很多进展，但是制造蓝色和绿色LED却显得非常艰难。
汤姆向她示爱。
The People's Bank made advances to commune-run factories.
人民银行贷款给社办工厂。
U. s. scientists have made advances in the last few years on several major fronts.
过去几年里，美国科学家在几个重要的领域里都有很大的进步。
Furthermore, the introduction of hybrid cars has made advances in the reduction of motorvehicle noise.
此外，混合动力汽车的应用也可以减少汽车带来的噪音。
Furthermore, the introduction of hybrid cars has made advances in the reduction of motorvehicle noise.
此外，混合动力汽车的应用也可以减少汽车带来的噪音。
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