重點講解：
1. play on 利用（恐懼、弱點或過失）；
Advertisements often play on people's fears.
廣告常利用人們的恐懼心理_ioonw8y^5Sx#w[0y。
2. cover up 隱藏，遮掩(事實)；
Irene's cleaning the floor had been a calculated attempt to cover up her crime.
艾琳擦洗地板就是為了蓄意掩蓋她的罪行*RES83Cl^.;YV);.dl。
3. spy on 秘密監視；
They're using villagers to keep an eye on each other, to spy on each other.
他們利用村民互相監視，互相窺探lThpsO9ZFhei6&。
4. under fire 遭到猛烈批評；受到強烈抨擊；
The traditional two-year MBA degree is under fire as many leading schools look to make the degree more flexible.
就在傳統的兩年制MBA課程遭受詬病之時，許多一流商學院開始著手賦予課程更大的靈活性Y+~geLgcp]2n[fImA。