I'd call that a stroke of luck.
我会说这是个机缘。
Cambridge took eater first,and went evenly along at a stroke of 38 to the minute.
剑桥队先下水，以每分钟划38次的均匀速度前进。
They threatened to cancel the whole project at a stroke.
他们扬言要一下子取消整个项目。
Several hundred men lost their jobs at a stroke when the factory closed.
工厂关闭, 几百号人一下子就都失了业。
At a stroke， that would curtail many valid forms of online interaction.
那么做将立刻抑制许多有效的在线互动形式。
That would dispose of ownership and management transparency worries at a stroke.
这将一举消除有关所有权和管理透明度的担忧。
You've then got an evens chance of doubling your money at a stroke.
然后你就有一半的机会可以把钱一下子翻一倍。
He gave the cat a stroke.
他抚摩了一下猫。
She gave the cat a stroke.
她抚摸了一下猫。
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