We designed the prototype, and then we had some technical problems.

我们设计了模型，然后我们遇到了一些技术问题。

youdao

Sure, Ray. As you know, we've been working on this product for quite a while. We designed the prototype, and then we had some technical problems.

当然。雷，如你所知，我们开展这个项目已经有很长一段时间了。我们设计了模型，然后我们遇到了一些技术问题。

youdao

Sure, Ray. As you know, we've been working on this product for quite a while. We designed the prototype, and then we had some technical problems.

当然。雷，如你所知，我们开展这个项目已经有很长一段时间了。我们设计了模型，然后我们遇到了一些技术问题。

youdao