extremely

adv.

极端地；非常，很；去；绝

extremely urgent迫在眉睫

extremely useful非常有用

extremely low frequency极低频

extremely cruel极其残忍；惨绝人寰

extremely high frequency极高频

1. I'm extremely sorry.
   我非常非常抱歉。
2. He knows the area extremely well.
   他对这个领域了解的非常透彻。
3. He is an extremely frank person.
   他是个极其老实的人。
4. It pains me extremely to have to leave you.
   不得不离开你，这使我极感痛苦。
5. This task is extremely difficult.
   这项任务极其困难。

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Are Neurodevelopmental Outcomes of Infants Born Extremely Preterm Improving Over Time?
Neurodevelopmental and growth impairment among extremely low-birth-weight infants with neonatal infection.
Neurologic and Developmental Disability at Six Years of Age after Extremely Preterm Birth — NEJM
Small-particle research: physicochemical properties of extremely small colloidal metal and semiconductor particles
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Loss, trauma, and human resilience: have we underestimated the human capacity to thrive after extremely aversive events?