Although a little lidocaine would be nice.

不过来点利多卡因倒是不错。

It isn't a better numbing agent, but it does bind a different family of proteins better than lidocaine does: taste receptors.

它不是种更有效的麻醉剂，但它确实有组不同但比利多卡因更好的蛋白家族：味感受器。

Since lidocaine is incredibly useful, the drug researchers were trying to see if they could find something similar that worked even better.

既然利多卡因超级有用，究人员就想试试能否找到比它更有效的类似物质。

Medications like lidocaine or Xylocaine, which you typically get at the dentist or for some minor procedures, basically block the opening of voltage-gated sodium ions, which means that you can't really have those action potentials spread.

像利多卡因或昔洛卡因这样的物，通常会在牙医那里或些小手术中使用到，基本上阻止了电压门控钠离子的开放，这意味着你无法让动作电位扩散。