Please be careful of his deceptive actions.

He always tries to act ethically.

He is devising a strategy against the enemy nation.

He is suitable for the job.

Please add an appropriate amount of salt according to the recipe.

Specialized knowledge is needed to solve this technical problem.

His original idea saved the company.

This text is difficult to understand.

He played the antagonist in the movie.

In preparation for an enemy attack, we strengthened our defense system.