这归因于我国自行车训练观念的落后以及训练方法手段的陈旧。

It dues to that our country's cycling training concept falls behind and cycling training methods and means is old.

youdao

就像你们看到的，我们的训练器材都非常落后与陈旧。

As you can see the training equipment we use are shabby and old.

youdao

他们的物理课程内容非常陈旧落后。

Their courses in physics are very much behind the times.

youdao