确定性和可能性 - 确定的或不可避免的

in a quick and decisive manner without much hesitation

to be absolutely sure that something is true

(of a thing) to have a very high chance to succeed or happen

something that is sure to happen

万无一失

to experience the negative consequences or effects of one's past actions or decisions

to be an integral part of a particular situation

to become affected by the outcomes of one's past actions