rigorous
adjective uk/ˈrɪɡ.ər.əs/ us/ˈrɪɡ.ɚ.əs/
(CAREFUL)
approving严密的，缜密的；严谨的
careful to look at or consider every part of something to make certain it is correct or safe
rigorous testing/checking/methods 精确的测试／严格的检查／严谨的方法
(SEVERE)
严格的，严厉的
controlling behaviour in a severe way
the rigorous controls governing the sale of shares 对管理股权出售进行的严格控制