F-20：fly in the face of 向……挑战
A:To be a revolutionary needs great courage!
A:要当革命者可真需要勇气呀!
B:He must be courageous enough to fly in the face of established authorities.
B：他得勇敢地向权威挑战。
A:Galileo is one of them.
A:伽利略就是其中之一。
B:So are Copernicus and many others.
B：哥白尼，还有许多其他人也是。
