The engineer's design followed the principles of aerodynamics to ensure stable flight.
工程师的设计遵循空气动力学原理，以确保稳定飞行。
- Frequency-hopping principles from her patent eventually became foundational to modern technologies like Wi-Fi and Bluetooth.
From a Rhetorical Synthesis question · Expression of Ideas
Which choice best defines “principles”?
A — Basic beliefs or rules that guide actions. “principles” means basic beliefs or rules that guide actions.
Which word means “basic beliefs or rules that guide actions”?
B — principles. “principles” means basic beliefs or rules that guide actions.
principles — basic beliefs or rules that guide actions. In Chinese: 原则，原理.
principles is pronounced /ˈprɪnsəpəlz/.
The engineer's design followed the principles of aerodynamics to ensure stable flight. (工程师的设计遵循空气动力学原理，以确保稳定飞行。)
beliefs, tenets, doctrines — all close in meaning to principles (basic beliefs or rules that guide actions).
exceptions, practices — each the opposite of principles (basic beliefs or rules that guide actions).
Yes. principles is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.