废电池的英文：
used batteries

used是什么意思：
adj. 用过的，旧的；习惯于…的

It is used as a reflexive.
它被作为反身代词使用。

That was a balk to us.
那对我们是个挫折。

They help us to be maximal encouraging to us.
他们来帮助我们对我们是个极大的鼓舞。

Already used and therefore unavailable for further use.Used of taxonomic names.
已占用的已经使用因而不能再作他用的。用于分类学名称

Why use wood when you can use plastic?
既然能用塑料，何必非用木料？

batteries是什么意思：
n. 电池；一系列，一批，一群

It is the positive of the battery.
这是电池的阳极

The battery is flat.
电池快没电了。

The capacity of the batteries depends on the brand and type of batteries used.
电池容量决定于所用电池的类型和牌号。

The bacteria battery could become as small as a household battery.
微生物电池可以像一般家用电池那么小。

It is mains or battery powered.
它是由电源或者电池供电的。