Tricyclopentadienide
三環戊二烯化物
??? 情景例句
He is in trouble all the time.
他總是有麻煩。
Please try to elucidate the facts.
請清楚的說明事實真相。
They devise hundreds of competitions which will enable us to win huge sums of money.
他們設計數以百計的競賽，競賽中有人可贏得巨額獎金。