to be prevented from moving by something

We were locked in traffic for over two hours on the way home. 回家的路上我们因堵车被困了两个多小时。

If you are locked in a situation or process, it is impossible for you to escape or make progress from it.

Both parties wish to avoid being locked in discussions that will resolve nothing. 双方都希望能避免陷入毫无意义的讨论而停滞不前。