You can see many posters that are put up before the movie opens.
每部电影首映前你都会看到铺天盖地的海报。
A bad conscience is a snake in one's heart.
做贼心虚。
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.