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

对于一驱动器的自动交换，这不相干的 (一文件的索引 1)。

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

人群中的发者们了些不相干的题，了难住发言人。