conjectural
adjective /kənˈdʒektʃərəl/
/kənˈdʒektʃərəl/
(formal)- (of an opinion or idea) not based on definite knowledge; formed by guessing
猜测;推测 - Some of the stages of the earth’s development are purely conjectural.
地球发展的一些阶段纯属推测。
- Some of the stages of the earth’s development are purely conjectural.