999英语网 英语单词
Protoxide的音标发音
Protoxide
英式发音：[pru'tksaid]
美式发音
(n.) That one of a series of oxides having the lowest proportion of oxygen. See Proto-, 2 (b).
菲力克斯校对
(n.) That one of a series of oxides having the lowest proportion of oxygen. See Proto-, 2 (b).
菲力克斯校对