vertigo, dizziness, popular science essence 48

motion sickness is of great importance to the combat effectiveness of the army. Our pilots, astronauts, navy and air force should not faint. Didn't the U.S. carrier battle group come to the South China Sea? Our navy cannot faint. Didn't those American F-22 also come to the South China Sea? Our pilots cannot faint. we must constantly study motion sickness and constantly maintain and improve the combat effectiveness of our military.