New words：

detect [dɪˈtekt] v. 发现；查明；侦察出
detection [dɪˈtekʃən] n. 探测；发现；侦查；察觉

Sample Sentences：

Mistakes should be corrected as soon as detected.
The tests are designed to detect the disease early.

Police use dogs for the detection of drugs.
The detection of the virus needs special tests.

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