They expand north to Archangel, so this gives them a port, but a frozen one.

他们向北扩张到阿尔汉格尔,有了一个港口,但常年冰冻

耶鲁公开课 - 欧洲文明课程节选

So some parents now are choosing to save the cord blood, have it frozen, locked away somewhere just in case its useful to their child later in life.

一些父母现在选择保存脐带血,冷冻储存起来,保存在某个地方以防万一,也许孩子将来用得着

耶鲁公开课 - 生物医学工程探索课程节选