他正好有我需要的零件,那真是走运。
He had exactly the part that I needed, so that was ___a ___stroke ___of ___luck.
仅一次面试就得到这份工作真是走运。
Getting the job after just one interview was ___a ___stroke ___of ___luck.
在二手书店找到那本稀有书籍真是幸运。
Finding that rare book in a second-hand shop was ___a ___stroke ___of ___luck.