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请问这句话怎么翻译好?尤其是“we have witnessed.”该怎么翻译?

来源:学生作业帮 编辑:拍题作业网作业帮 分类:英语作业 时间:2024/04/27 23:00:24
请问这句话怎么翻译好?尤其是“we have witnessed.”该怎么翻译?
In the past few years we have witnessed intensive research activity in the development of a variety of electronic devices based on the wide band gap refractory semiconductor GaN, and its related alloys and heterostructures.
翻译:
在过去的近几年内,我们见证了为了发展,以宽禁带半导体氮化镓和其相关合金和异质为基础的,各种电子设备的深入研究活动.