Such nanoparticles, designated as EbNPs, also carry highly active silver ions that attach to and kill bacteria, but their core is biodegradable and not harmful to the environment.

这种纳米粒子被叫作木质芯纳米颗粒，它也含有活跃的银离子，并附着在真菌上并将其杀死，但是这种木质芯能够生物降解，并对环境无害。

The pH scale is the most common way of measuring an acid's strength, based on the concentration of active hydrogen ions when the acid is mixed with water.

pH 值是衡量酸性强弱最常用的一种方法，根据酸在水溶液中的活泼氢离子浓度进行计算。