他肯定认识她
He must know her
以上为机器翻译结果，长、整句建议使用 人工翻译 。
她认识他的时间还不够长，还不能肯定。
She had not known him long enough to be sure.
youdao
参议员莫尼汉把她介绍给大家，他说自己认识埃莉诺·罗斯福，并说，埃莉诺肯定会喜欢希拉里。
Senator Moynihan introduced her. He said that he had known Eleanor Roosevelt and that she would love you.
要是他认识她的话，他肯定会去问候她了。
If he knew her, he would have greeted her.
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