He thinks it tastes bad.
This is a simple translation of the phrase "他认为它很难吃" into Engpsh. It is a straightforward translation and does not have a specific idiom or phrase that is commonly used in Engpsh.
Examples:
He thinks the food is terrible.
He considers the drink to be unpalatable.
中文翻译: 他认为食物很糟糕。 他认为饮料不好喝。