Today's Sentence
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Training started with trips to a human centrifuge, which tests pilots and astronauts ability to withstand the gravitational forces they'll experience during flight.
Original Video：
SpaceX Is About To Make History Again, Here’s How
Key Vocabulary
1. centrifuge
centrifuge
[ˈsentrɪfjuːdʒ] (n.)
2. astronaut
astronaut
[ˈæstrənɔːt] (n.)
3. gravitational
gravitational
[ˌgrævɪˈteɪʃənl] (adj.)
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