Ferrotephroite
铁锰橄榄石
🗣️ 情景例句
What's bugging you?
你正烦什么？
The first step is the only difficulty.
万事起头难。
He explained that he had tried to fix the air-line to the supply line that ran round the port but could not because the fittings did not match.
他解释说他想供气管安装到铺设在码头周围的供应管上，但因为接头不相配而接不上。