重点讲解：
1. be associated with
（与…）相关的；相联系的；
eg. Hell is traditionally associated with suffering.
地狱历来与受苦联系在一起+jD-hyFl3^1Pf9tKKT。
eg. Orange-blossom is associated with weddings.
看到橙花可以使人联想到婚礼qIJ(pmTHsGB~RAMq*。
2. on average
平均起来；按平均值；
eg. On average, I spend 100 on books each month.
我平均每个月花在买书的钱有100元.K0y~3S18G。
eg. London has on average 7.6 hours of sunshine per day during May.
伦敦五月份每天平均有7.6小时日照时间J4mz9;my_#hXnQ0V。
3. turn on
打开（设备）；接通（…的供应）；
eg. Parents can programme the machine not to turn on at certain times.
父母可以设定这台机器的程序，使它在特定时间段无法开启8dx(U^Kv]W,i3iY。
eg. He forgot to turn on the radio and thus missed the program.
他忘了打开收音机，因此错过了那个节目GNgi-m9^adX84*CYur+。
4. discharge from
允许…离开（医院、军队）；
eg. I don't think you should discharge from hospital so early.
我认为你不应该这么早出院S9zTfw~M2A。
eg. The pupils were discharged from school.
小学生们放学了ORo|kXkA,2I39。