这个项目非常松散，没有明确的计划或时间表。

The project was completely ___unstructured, with no clear plan or timeline.

孩子们在公园里度过了无拘无束的下午，他们自由玩耍。

The children enjoyed an ___unstructured afternoon in the park, playing freely.

孩子们在无组织的游戏中更有创造力。

Children show more creativity during ___unstructured playtime.