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。
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。
Due to circumstances beyond our control the lecture was cancelled. 由于无法控制的情况，讲座取消了。
