Semicentenary
a. 半世紀(jì)的,50年的
??? 情景例句
I see. Then you don't have any collateral.
我明白了。那么你們沒有任何擔(dān)保物。
To make a public speech
發(fā)表演說
You need to practise a lot with the actors before.
上演前你得同演員一道進(jìn)行大量的排練。