It is the first one of its kind that has worked so clearly.

这也是同类试验中第一个效果如此明显的试验。

youdao

It was the kind of mistake we had worked hard to avoid.

这类错误正是我们一直要极力避免的。

youdao

It was the kind of mistake we had worked hard to avoid.

这类错误正是我们一直要极力避免的。

youdao