999英语网 英语单词
Sima的音标发音
Sima
英式发音：[saim]
美式发音
(noun.) rock that form the continuous lower layer of the earth's crust; rich in silicon and magnesium.
奥罗拉编辑
(noun.) rock that form the continuous lower layer of the earth's crust; rich in silicon and magnesium.
奥罗拉编辑