难度：***

难句：Further down the line, NASA would essentially buy “station service” from a private contractor tasked with launching a modern ISS successor.

further down the line 最终， essentially 本质上

最终，NASA本质上会从参与发射用于替代旧ISS的现代型的ISS私人公司合同方购买“空间服务”。

Among these companies is California-based Vast space. 这是一个倒装句，正常语序是：

California-based Vast space is among these companies.

单词和短语：

crewed mission 有人的任务

be due to = plan to

The survey is due to be submitted tomorrow.

slate for=planned

The task is slated for end in this morning.

sport 穿戴，装点

She was sporting a T-shirt with the company’s logo on it.