1.but rather 而是
On the streets of Seoul, there was no sense of panic, but rather an undercurrent of anxiety.
在漢城的街道，沒有恐慌感，而是一種焦慮的暗流0OT2#a!s%fznv89]。

2.it's fair to say that 說句公道話；公平地說
It is fair to saythat a considerable amount of effort has gone into the project.
說句公道話，這一計劃是花費了很大的心血的Z#9RG8-!k&Q(&j。

3.a set of 一套；一組
The goal is not to have a set of precise numbers, but a set of reasonable estimates for an Earth-restoration budget.
這樣做的目的并不是為了獲得一套準確的數字，而是為修復地球的花費作出一套合理的估算A+.k4~M(|3bsakjL.3TR。

4.bet on 打賭
He said he would be delighted if the United States managed to stave off a recession, but added he would not bet on such an outcome.
他說，如果美國能設法度過衰退，他將非常高興!Lr2x,)ki*Ub*-fN。但是他說，他不會打賭一定會是這樣的結果4KJe_Tzckyf-7YV。