unsuccessful

The search party was unsuccessful in finding the missing hiker before the blizzard began.

(Chinese) 搜救队在暴风雪开始前未能找到失踪的徒步旅行者。

Despite a huge marketing budget, the company's attempt to launch the new soft drink was unsuccessful.

(Chinese) 尽管营销预算巨大，该公司推出这种新软饮料的尝试还是失败了。