By a stroke of luck, a cancellation opened up a seat on the earlier flight.

運氣真好，剛好有人取消，較早的班機空出了一個座位。

Hiring Ms. Chen was a stroke of good fortune for our small marketing team.

聘請陳小姐對我們的小型行銷團隊來說真是意外的好運。

In a stroke of luck, the delayed shipment arrived just hours before the trade show.

幸運的是，延誤的貨物在商展開始前幾小時及時送達。