on the point of [ɔn ðə pɔint ɔv]

以下由轻松背单词网站提供

正要…之际，就要…之时

I was on the point of going to bed when you rang. 你打电话的时候我正要睡觉。
Xiangzi was on the point of leaving when someone knocked at the gate. 祥子刚要走,有人敲门。