在第9课第198页上有一句，
but deep down they are miserable
用英语解释：
but the pain in their hearts was terrible,
deep down含义就是，内心深处，例如，
She seem s indifferent, but deep down she's very pleased.
她貌似无动于衷，其实心里非常高兴。
He seems confident but deep down he's quite insecure.
他好像很有信心，实际上却没什么把握。
but deep down they are miserable
用英语解释：
but the pain in their hearts was terrible,
deep down含义就是，内心深处，例如，
She seem s indifferent, but deep down she's very pleased.
她貌似无动于衷，其实心里非常高兴。
He seems confident but deep down he's quite insecure.
他好像很有信心，实际上却没什么把握。
