youdao

What varies is not the basic form but the incidental details that do not obstruct the object's primary function.

变化的不是基本形式，而是不妨碍物体的主要功能的附属细节。

youdao

youdao

And this is the key point: it is not about dropping school accountability altogether, but about making sure it does not obstruct teaching and learning.

BBC: Signs of a turning tide on tests

The key for the Germans is that Britain does not obstruct.

BBC: Britain lined up as Europe's fall guy

It came despite a landmark Supreme Court ruling last month that the two-time former premier, whose elected government was ousted by Musharraf in a 1999 coup, had the right to return to Pakistan and that authorities should not obstruct him.

NPR: Sharif Deported Hours After Arriving in Pakistan