为了快速完成项目，他们使用了一些不道德的权宜之计。

They used some unethical ___expedients to finish the project quickly.

被困在荒岛上时，他们用贝壳和藤蔓作为临时工具来获取食物。

Stranded on the island, they used shells and vines as ___expedients to gather food.