Columbus' accomplishment, once accepted, enabled mankind to use the existing skills of seacraft for vastly greater undertakings.

哥伦布业绩一旦被接受，就使人类能利用现有海技术从事伟大事业。

With three thousand-ton-level ports, Binhai port is the second class open port and seacraft can directly sail to Dalian, Qindao and Shanghai.

有3千吨级码头滨海港是国家二类开放口岸，大型海轮可直大连、青岛、上海。