求翻译：The next step in processing the batch is to neutralize the acid. A strong lye solution is mixed up and added to the batch with shaking until the batch is strongly basic. This brings the meth out as liquid free base floating on top of the water. The strongly basic solution is shaken vigorously to ensure that all the meth has been converted to the free base.是什么意思？

待解决 悬赏分：1 - 离问题结束还有