Back in his toolshed, Ove fetches the spare battery for the Saab and two large metal clips.

欧维和猫回到储藏室，取出萨博的备用电池和两把大金属钳。

I am packing three spare phone batteries so I don't run out of juice on my climbing trip.

我装了三块备用的手机电池，这样我的手机就不会在登山旅行中没电了。

So, you can have a spare battery for your laptop as well.

所以, 你也可以为你的笔记本电脑备用电池。

So, here the word " spare" really means " spare battery, " an extra battery.

所以，这里的“备用”一词的真正意思是“备用电池”，即额外的电池。

Allesandro asks Luisa if she brought a spare – that is, spare battery.

Allesandro 问 Luisa 是否带了备用电池——也就是备用电池。