Mischmetal
含鈰的稀土[鉬系]元素合金
??? 情景例句
Fine. We were just wondering about this trunk.
好啦。我們正納悶這只大衣箱呢。
We want to raise our children to be decent men and women.
我們要把我們的孩子培養成正派人。
But nothing can match them for speed and comfort.
但就速度與舒適而言，飛機是無與倫比的。