重點講解：
1. think of 想起；想到；
例句：Every once in a trance when will recall the circumstances of the past, seems to think of the joy of sadness.
每一次發呆的時候，都會想起昔日的情節，想到歡樂中隱隱的哀傷=B!pR_2hWCYCyr6。
2. go down （價格、水平或數量）下降，下跌；
例句：Average life expectancy went down from about 70 to 67.
平均預期壽命從70歲左右降到了67歲Gp=QI9](clOHz04v。
3. all the time 一直；始終；
例句：Then the scales fell from my eyes: he had been lying all the time.
我恍然大悟: 他一直在撒謊^UjXVAAee_MG,g4o。
4. even though 即使；盡管；縱然；
例句：Even though I take medicine, I feel worse than I do yesterday.
雖然吃了藥，卻好像比昨天更嚴重T&kLVx&q-mz。