Examlex
An ethical dilemma involves choosing among conflicting alternatives that aren't clear-cut.
X-rays
Electromagnetic radiation of high energy and very short wavelength, which is able to pass through many materials opaque to light.
Metal Detectors
Electronic devices that are used to locate metallic objects within a surrounding medium through the generation and detection of electromagnetic fields.
Terrorists
Individuals who use violence and intimidation, especially against civilians, in the pursuit of political aims.
Hijackers
Individuals who unlawfully seize control of a vehicle, such as a plane or ship, often to reach a particular goal or demand.
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