重點講解：
1. lose weight
體重減輕；變瘦；
eg. She has been taking exercises to lose weight from day to day.
她每天鍛煉來減肥D*n(Sy|ER[*vQy+8。
eg. Several ladies who were trying to lose weight had already fallen by the wayside by eating cream cakes.
幾位女士試圖減肥，但同時又吃奶油蛋糕，結果是半途而廢*g!diN.1l~BFw。
2. work out
鍛煉；健身；
eg. I work out regularly to keep fit.
我經常做運動以保持健康,kt*_@#wAT。
eg. The basketball players are working out at the gym.
籃球運動員們正在體育館進行訓練^qSZx-MOW~*q。
3. common sense
常識；直覺判斷力；
eg. He behaves as if he had no common sense.
他的言行就好像沒有常識似的*MFp8_w6c~_6IVB,uV。
eg. Knowledge without common sense count for little.
沒有常識的知識沒多大用處VtJ9ocW1_KrRx+dX16。
4. for sure
無疑；肯定；
eg. I know for sure that the chances are in favor of those who are always ready.
我確實相信,機會屬于時刻準備著的人7i),nyUZx5A。
eg. I think he'll be back on Monday, but I can't say for sure.
我想他星期一會回來，不過我不敢肯定Z%~(9_L0%bAC。