outset

/ˈaʊtˌsɛt/

the time at which something is supposed to begin

中文释义：开始；开端

It is important to clarify the rules at the outset of the project.

在项目开始时明确规则很重要。

From the outset, the team faced numerous challenges but never gave up.

从一开始，团队就面临无数挑战，但从未放弃。