In it, the panel blames pressure to fly the shuttles twice a month for the accident that killed seven astronauts.

报告中，专家组谴责挑战者号压力太大，1个月内要往返2次。而正是这种压力导致7名宇航员殒命。

As a pilot I had to learn how to fly the space shuttle, for launch and landing, and rendezvous, and all the piloting tasks.

作为飞行员，我需要学习怎样驾驶航天飞机，如何起飞及着陆，进行会合及所有飞行员任务。