dubitable

The authenticity of the painting is dubitable, as experts have questioned its origin.

这幅画的真实性是可疑的，因为专家们对其来源提出了质疑。

用法提示：形容词dubitable作表语，表示主语the authenticity具有可疑的性质。

His explanation for being late seemed dubitable, so I asked for more details.

他迟到的解释似乎可疑，所以我要求提供更多细节。

用法提示：形容词dubitable作表语，描述explanation的可疑程度。

The report's conclusions are dubitable given the lack of solid evidence.

鉴于缺乏确凿证据，该报告的结论是可疑的。

用法提示：形容词dubitable作表语，强调conclusions因证据不足而不可靠。