Rapid development took place in the area during the past ten years, but there are still many problems to be solved.
在过去的十多年中，虽然很多专家学者投身其中，也取得了可喜的成就，但还难以达到实用的标准。
Rapid development took place in the area during the past ten years, but there are still many problems to be solved.
在过去的十多年中，虽然很多专家学者投身其中，也取得了可喜的成就，但还难以达到实用的标准。
应用推荐