If you translate this sentence literally, it doesn't make sense.

Early detection of rectal cancer is very important.

He always expresses his opinion frankly.

He always expresses his opinions frankly.

This building is built completely vertical.

This train goes directly to Tokyo Station.

This electrical circuit is connected in series.

He was walking in fits and starts.

I will be on night duty at school tonight.

His words were filled with similes, vividly portraying his emotions.