test·ing /ˈtestɪŋ/ a. | n.I a. 1. 需费尽心力对付的，伤透脑筋的，棘手的 a testing situation 伤脑筋的局势 a most difficult and testing problem 极棘手的难题 2. 试验的；考验的 a testing stage 试验阶段 the testing place of sb.'s courage and will 某人勇气和意志的考验场所 II n. 试验；检验 nuclear testing 核试验 the testing for tuberculosis 结核病检查