他的演讲很有力，足以改变许多人的想法。
His speech was powerful enough to change many minds.
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powerful英 /ˈpaʊəfʊl/|美 /ˈpaʊərfʊl/
解释
powerful 是形容词，由名词 power（力量）加上后缀 -ful（充满...的）构成，意思是"强有力的、有影响力的"。
His speech was powerful enough to change many minds.
powerful 是形容词，由名词 power（力量）加上后缀 -ful（充满...的）构成，意思是"强有力的、有影响力的"。