There are, of course, to train, more time-consuming, and not for discussion.

当然，训练，更多的时间，而不是讨论。

youdao

I haven't seen this used that often but it seems like a useful technique because it still acknowledges that someone has a valid point, just that it's not for discussion at the moment.

我不太常见到这项技术的使用，但它似乎是项有用的技术，因为它对他人的观点表示认可，只是当时不进行讨论。

youdao

He is merely throwing the idea forward for discussion, it is not cast in stone.

他只是抛出个想法供讨论，不是固定不变的。

《柯林斯英汉双解大词典》

I'm not sure whether we'll use the Classes server to have you sign up for discussion sections online, or whether we will do it the old-fashioned way and have you sign up on forms that we'll give you here in class.

我还没想要是用校网站,让大家在线讨论，还是用传统的,课堂讨论。

耶鲁公开课 - 新约课程节选

If you're not participating in discussion section, you're not doing what the section is there for.

如果你不参与讨论，那你你就没有做到这个讨论所要求的。

耶鲁公开课 - 死亡课程节选

It was presented to me as fait accompli, not something for discussion.

CNN: ASIANOW - TIME Asia | 'I Realized My Position Was On the Rocks'

Mr Biden, who arrived in Georgia after visiting Ukraine, said that while the US was keen to maintain good relations with Russia, certain issues were not up for discussion.

BBC: Biden pledges support for Georgia

Britain says that is not up for discussion.

ECONOMIST: South Atlantic