under one's very eyes
亲眼所见
A:I heard several people were killed in the car accident.
A:我听说那场车祸中死了好几个人。
B:Twelve, to be exact.
B:确切地说,是十二个。
A:How do you know it so clearly?
A:你怎么知道得这么清楚?
B:I was walking along the road that day. So it happened under my very eyes.
B:那天,我正好在街上,所以碰巧都看见了。