unforeseen

The project was delayed due to unforeseen technical difficulties that arose during the testing phase.

(Chinese) 该项目由于在测试阶段出现的意外技术困难而推迟。

The company had to set aside emergency funds to cover unforeseen expenses like legal fees or repairs.

(Chinese) 公司不得不拨出应急资金来支付律师费或维修费等意外支出。