摘要：
learn...byheart用心学习combine...with...与...结合inthatcircumstanc es如果是那样的话replace...with...用...... learn ... by heart 用心学习
combine ... with ... 与...
结合
in that circumstances 如果是那样的话
replace ... with ... 用...代替...
keep a record of 记录
comments on ... 关于...的意见
at least 至少来源:
speak about 谈及
expect of/from... 从...当中期待
in return 作为回报
the survey on ... 关于...的调查
differ in... 在...不同
emerge from... 从...出现
be satisfied with...
play ... roles 扮演...的角色
