我们可以确定他开始做梦的时刻与结束做梦的时刻，并且精确到一秒钟以内。

We can identify, to within one second, the instance he begins to dream and the instance his dream ends.

youdao

我们可以确定他开始做梦的时刻与结束做梦的时刻，并且精确到一秒钟以内。

We can identify, to within one second, the instance he begins to dream and the instance his dream ends.

youdao