detect

柯林斯词典

1. V-T To detect something means to find it or discover that it is present somewhere by using equipment or making an investigation. 探测
...a sensitive piece of equipment used to detect radiation. …一台探测辐射的敏感仪器。
2. V-T If you detect something, you notice it or sense it, even though it is not very obvious. 察觉
Arnold could detect a certain sadness in the old man's face. 阿诺德能察觉到老人脸上的某种悲伤。

The alarm should go off automatically as soon as smoke is detected.
Many serious illnesses can be nipped in the bud if they are detected early enough.
I thought I could detect a slight West Country accent .
In the future , cars equipped with on-board computers will be able to detect and avoid traffic jams automatically .
I could detect subtle variances in fragrance as we strolled through the garden .