对没有把握 be uncertain about
没有绝对把握 don't know for certain
我对成功没有把握 My success was uncertain
对---没有把握
Yes -- not sure
以上为机器翻译结果，长、整句建议使用 人工翻译 。
52%的人对这个想法都没有把握。
Fifty-two percent were unsure about the idea.
《柯林斯英汉双解大词典》
一个人如果对自己掌握的事实没有把握，就绝不该随便批评。
One should never criticize if one is not sure of one's facts.
《牛津词典》
理查德对如何最好地向年迈的母亲开口没有把握。
Richard was uneasy about how best to approach his elderly mother.
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