proctor
n
1 (Brit) (at the universities of Oxford and Cambridge) either of two officials with responsibility for discipline (牛津和剑桥大学的)学监(共两名, 主管纪律).
2 (US) person responsible for supervising students in an examination, esp so that they do not cheat 监考人.
Once we detected a planet, we would have to find a way of blotting out the light from its star, so that we would be able to 'see' the planet properly and analyze its atmosphere.