We have to o

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We have to o______ many difficulties before we succeed
overe [,əuvə'kʌm]
vt.克服；胜过
vi.得胜；克服
我们要克服很多困难,才能成功.
======以下答案可供参考======
供参考答案1:
overe克服
供参考答案2:
是overe 吗