1. Law enforcement officials had definitively identified Blanco as a potential suspect.
执法官员明确认为布兰科是个可能的嫌疑犯。
《柯林斯英汉双解大词典》
2. I think, personally speaking, that we need some further research before we can definitively say whether it helps or not.
我认为,就我个人而言,我们需要进一步的研究才能确定这是否有帮助。
youdao
3. When asked to make simple perceptual decisions such as matching a shape to its rotated image, for example, people often choose a definitively wrong answer if they see others doing the same.