phrase
B2
expected to be something, often due to rules or agreements.
The children are supposed to be at school by 8.45 a.m.
子供たちは午前8時45分までに学校にいることになっています。
B2
thought by many to be something.
The scenery is supposed to be fantastic.
風景は素晴らしいとされています。
translation
であるべき, とされている