However, in advance of project completion, the source of contingency expenses is not known.

然而，在项目完工前，应急储备金的动用与否是根据意外事件是否发生来确定的。

youdao

However, in advance of project completion, the source of contingency expenses is not known.

然而，在项目完工前，应急储备金的动用与否是根据意外事件是否发生来确定的。

youdao