1. Keep my edge 保持最好的状态
I have to speak English every day to keep my edge.
我必须每天说英语以保持最佳状态。
链接：
stay sharp：保持锋利
lose one's edge：不在状态
2. Keep my fingers crossed 祝你成功，祝你好运
I know you are looking for a job so I keep my fingers crossed for you.
我知道你在找工作，祝你好运！
释义：把中指畳在食指上交叉作十字状，表示暗中希望上帝保佑自己正在做的事成功。
