substantiate的现在完成时怎么写

vt.用事实支持（某主张、说法等），证实，使具体（实体）化...

substantiate的一般过去时为：substantiated...

substantiate的现在进行时为：substantiating...

substantiate的音标：substantiate的英式发音音标为：[səb'stænʃieɪt]substantiate的美式发音音标为：[səb'stænʃiˌeɪt]...

substantiate的第三人称单数（三单）为：substantiates...

Do you have any proof to substantiate your alibi?你有证据表明你当时不在犯罪现场 吗 ?There is little scientific evidence to substantiate the claims.这些主张几乎找不到科学依据来证实。Field experience did not usually substantiate the claims.实际经验通常都不能使这些看法具...