Molybdena
氧化钼
🗣️ 情景例句
A good medicine tastes bitter.
良药苦口，忠言逆耳。
He who wants a mule without fault,must walk on foot.
指望驴子无缺点，只有自己徒步行。
This caused the construction of gigantic buildings where too large masses of human beings are crowded together.
这样就导致了许多摩天大厦拔地而起，大厦内众多的人挤在一起。