例句：
A job interview is a very artificial situation.
求职面试是一个非常不自然的场面。
The juice contains no artificial preservatives.
这种果汁不含人工防腐剂。
This food contains no artificial flavourings.
这种食品不含人工调味品。
The treatment does not involve the use of any artificial drugs.
这种治疗不会使用任何人工合成药物。
He did not want his life to be prolonged by artificial means.
他不想靠人为方式延长生命。