1. be up against 对抗；防范；面对
They are up against a highly organised army, using a sophisticated communication system to coordinate its behaviour.
他们面对的是一支组织十分严密，利用尖端的通讯系统协同作战的正规军z)+2DW.z5o!#*n&。

2. at the end of the day 说到底
At the end of the day, policy -- like policy governing policing and immigration -- is where the action needs to be.
说到底，政策——比如管理治安和移民的政策——就是需要行动的地方q-XS=qFLovNr。

3. to do that 为此
To do that, they use a variety of simulations, large-scale electromagnetic calculations, and measurements.
为此，他们使用了各种仿真技术、大规模电磁计算和测量技术1)GsAkNRs-3=!DHqhY=G。

4. in reponse 作为回应
In response, the Supreme Court changed its decision, and said the extradition should proceed unless Mr Apablaza was granted asylum.
作为回应，高等法院改变了决定，并说将执行引渡，除非Apablaza被获准庇护6qS|JQB1;#8Q4。