4. to keep (one's) fingers crossed: to hope something good will happen (祝福某人好运或一切顺利.把食指与中指交叉,祈求好运,是老外的迷信,但在写信或正式场合,多半是用"I wish you best (good) luck!"或"Good (best) luck to you!")
He keeps his fingers crossed hoping his father will send him more money. (他盼望有好运,老爸能多寄点钱给他.)
Many people have been keeping their fingers crossed that we can live in a peaceful world. (许多人都在祈求好运,盼能在和平的世界里生活.)