WordMate - 在线英语词典

strengthened ˈstreŋθnd

v. 加强, 巩固( strengthen的过去式和过去分词 )

v make strong or stronger
v gain strength
v give a healthy elasticity to
s given added strength or support

原型: strengthen 原型变体: dp 过去式: strengthened 过去分词: strengthened

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