detect /diˈtekt/ vt. 觉察，发现：The decay of food can usually be detected by the sense of smell. 食物的变质一般可以凭嗅觉发现。Small quantities of poison were detected in the dead man’s stomach. 在死者胃里发现了少许有毒物质。
detection /diˈtekʃən/ n.［u］发觉，发现，侦察： crime detection 犯罪侦察 Many important mistakes have been escaping detection. 许多重大错误未被觉察。
detective /diˈtektiv/ n. ［c］侦探，私人侦探：hire a private detective 雇一名私人侦探；a detective story 侦探小说
