不相干的

Hecklers in the crowd asked irrelevant questions for the sole purpose of vexing the speaker.

人群中发问者们问了些不相干问题，只是为了难住发言人。

For a one-drive autochanger, this is irrelevant (one device file would have the index 1).

对于一个驱备，这是不相干 (一个备文件索引为 1)。