They crosstheirfingers and spit over their shoulders as charms against the evil eye.
他们交叉手指,往肩后吐口水,以此作为对抗凶眼的符咒。
《柯林斯英汉双解大词典》
2
That's why children often crosstheirfingers when they tell a small lie.
这就是为什么儿童往往跨他们的手指,当他们告诉一个小的谎言。
3
Sad to say, it appears that America's monetary mandarins are set on avoiding bold action, content to crosstheirfingers and hope that the current slowdown is nothing more than a soft patch.