The problem was rendered extremely difficult by the extraordinary inertness of the nitrogen, which refuses to combine even with oxygen. 由于氮极大的惰性，不能与氧结合，所以这个问题被渲染得过分困难。
ZnO shows good chemical inertness and bio-compatibility.Also, ZnO is the only material which possesses good piezoelectric and semiconductor properties. 摘要氧化锌具有良好的化学惰性和生物兼容性，也是目前同时具有压电性质和半导体性质的唯一材料。
美
[ɪn'ɜːtnɪs]
