The unplanned power outage during the experiment forced scientists to recalibrate their instruments.
实验期间的意外停电迫使科学家重新校准他们的仪器。
While wind turbine blade length has roughly tripled over the past three decades, the primary driver of falling wind energy costs has actually been improvements in predictive maintenance software, which reduces costly unplanned downtime far more than blade length increases alone would predict.
From a Central Ideas and Details question · Information and Ideas
Which choice best defines “unplanned”?
A — Not planned or expected. “unplanned” means not planned or expected.
Which word means “not planned or expected”?
C — unplanned. “unplanned” means not planned or expected.
unplanned — not planned or expected. In Chinese: 无计划的.
unplanned is pronounced /ʌnˈplænd/.
The unplanned power outage during the experiment forced scientists to recalibrate their instruments. (实验期间的意外停电迫使科学家重新校准他们的仪器。)
spontaneous, impromptu, unforeseen — all close in meaning to unplanned (not planned or expected).
planned, deliberate — each the opposite of unplanned (not planned or expected).
Yes. unplanned 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.