怎么翻译这句话中的at one point

at one point:

一度,在某一时刻

例句与用法:

1. At one point I thought she was going to refuse, but in the end she agreed.

当时我以为她要拒绝，但最后她却同意了。

2. At one point, it seemed certain that their plane would crash.

在某地，好象他们的飞机肯定要被撞得粉碎似的。

3. At one point I think she is going to refuse, but in the end she agrees.

当时我以为她要拒绝，但最后她却同意了。