The piece behind me is the liquid hydrogen tank.

我身后的那块是液氢贮箱。

NASA historian Brian Odom explains that the liquid hydrogen tank is just one piece of the larger SLS system.

美国宇航局历史学家布莱恩·奥多姆解释称，液氢罐只是大型SLS系统的一部分。

Elon Musk said there was too much pressure in a liquid oxygen tank on the rocket. He said his company is investigating the reason for the over-pressurization.

伊隆·马斯克称爆炸是因为火箭液压罐压力太大，他说该公司正调查压力过大的原因。