n.环境；详情；事件；(复数)境况

He was forced by the circumstances to do this. 他做此事是为环境所迫。

The choice of technique is, therefore, a matter of preference, and in some cases circumstance. 因此,技术的选择是偏好的问题,在某些情况下也与环境有关。

I cannot recollect the exact circumstance. 我总是想不起确实的情况。

Your arrival was a fortunate circumstance. 你的到来是命中注定的。