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 semicondu

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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?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 semicondu
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.

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 semicondu
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.

在过去几年我们目睹了密集的研究活动的发展，各种电子设备的基础上，宽禁带半导体氮化镓耐火材料，及其相关的合金与异质结构。

在过去几年我们目睹了密集的研究活动的发展，各种电子设备的基础上，宽禁带半导体氮化镓耐火材料，及其相关的合金与异质结构。

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。

在过去的几年我们见证了为了开发各种基于宽频防火半导体氮化镓和它相关的合金及其异质结构而开发的电子设备进行的精密研究。

在过去几年我们目睹了密集的研究活动的发展，各种电子设备的基础上，宽禁带半导体氮化镓耐火材料，及其相关的合金与异质结构。

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 semicondu 求这句话翻译,尤其是 as怎么选?因为?虽然? 请问这句话该怎么翻译,谢谢.At the post office,letters are put into bunches.尤其是put into bunches. 这句话怎么翻译好 We need to find out all we can about its dangers. i shall wear my coat how i like请问这句话如何翻译?尤其是how这个单词在这里怎么翻译? how can this be when we were neant to be请问这句话怎么翻译. 请问We have a good bit put away for a rainy day.这句话怎么翻译 英语翻译请问这句话应该怎样翻译才算通顺?尤其是where后面的! 喂喂..翻译下这句话喂 I hope,our friendship is forever and has no end!ha ha ha! 请问这句话怎么翻译?As soon as we know we can pay you for the work so A similar misfortune struck Rosa,too.这句话怎么翻译,尤其是struck (strike)这个词怎么理解 we sall right into the storm across the ceans朋友们好!请问一下这句话怎样翻译? 怎么翻译?It is we who are to blame the poverty because we used to produce children without limit.请问这句话怎么翻译? It's difficult to dance like they do,这句话怎么翻译,尤其是like they do “黑人文化的语言学解读”这句话怎么翻译?尤其是 语言学解读 麻烦各位了, 请问：let's get down to the basics 这句话怎么翻译好? 请问这句话怎么翻译好?有没有语法错误?：round the clock feature KFC. 英语翻译这句话怎么翻译的好.