testing expense造句

例句与造句

1. With the new methods provided , only a small number of samples are required at the same risks , so the test expenses and test time are reduced
   该方法在相同风险下只需少量的现场试验就可以进行维修性验证，从而减少试验成本，缩短试验周期。
2. It's difficult to find testing expense in a sentence. 用testing expense造句挺难的