Theoretical physics is to the experimental physicist what the theory of harmony is to the composer.
理论物理对于实验物理学家，就像和声理论对于作曲家一样。
The text is a tissue of quotations drawn from the innumerable centres of culture.
The ocean is not just a source of food, but a vital part of our planet's ecosystem that we must protect for future generations.
"The writer is a man who is in love with words, who is obsessed with words, who is possessed by words."
音乐是我的生命，我每天都在过这样的生活。