Silundum
n. 硅碳剛石
??? 情景例句
I'm calling for your assistance.
我打電話是要您幫助我。
Tractors have revolutionized farming.
拖拉機使耕作有革命性的變化。
But why did white people want to catch Africans and put them in chains?
但是為什么白人要把非洲人抓起來，戴上鐐銬呢？