stress的词性转换

　　She was at great pains to stress the advantages of the new system.

　　她极力强调新制度的优点。

　　I must stress that everything I've told you is strictly confidential.

　　我必须强调，我告诉你的一切都要严加保密。

　　Stress is a major problem of modern life.

　　压力是现代生活中的主要问题。

　　Only then did she realize the stress he was under.

　　直到那时她才意识到他所承受的压力。