This chance occurrence furnished her instantly with a plan worth all her laboured tests combined.

这一偶然的事件使她立即想到了一个计划，比她费尽心机想的那些测验方法合到一起还强。

youdao

Had she counted on getting back in sufficiently good time for me to remain unaware of her absence, and had some chance occurrence detained her?

她是不是本来打算要及时回来，不让我发现她曾经离开过，但由于发生了意外的事把她拖住了呢？

youdao

The destructive and deadly wind gust on Saturday evening in Indianapolis was no chance occurrence.

FORBES: Indiana State Fair Stage Collapse, a Youth Softball Siren, and Respecting the Weather

There was a slight increase in heart risk for naproxen users, but the increase was so small that it may have been a chance occurrence.

FORBES: Fear Mongering At The FDA

Given the expected continued global growth, let us assume that it has a 20% chance of occurrence in the next 25 years.

FORBES: Freeport McMoran Mines Major Cash Lode