Because it's also known now as Youth Day. So you see-
因为这个节日还被称为是青年节,所以你明白了-
A small leak will sink a great ship.
一个小漏洞可能弄沉一艘大轮船。
When the ship finally arrived in a port, the wooden cover was opened wide and Kunta could see in daylight for the first time across the part of the ship where he had been chained.