應該是challengeable
challengeable翻譯:應回避的；挑戰性的
例句：
1、Power System Voltage Stability is a challengeable problem.
電力系統電壓穩定性是壹個具有挑戰性的問題。
2、The integrated art curriculum is a challengeable and open course.
綜合藝術課程是壹門具有挑戰性、開放性的課程。
3.With the PLD density becomes higher and higher, it is challengable to verify the fuse map file in the quality assurance of the PLD EDA software, and the Silicon Verification is an important method.
隨著器件的密度越來越大，在PLD EDA軟件的質量保證中測試熔絲映射文件的正確性對測試工程師來說是壹個挑戰，而矽驗證即為壹種重要的方法。
4.To be the most reliable professional engineering company with most timely and challengable service.
以更快捷、更具競爭力的服務，做本地區最受信賴的專業工程公司。