The reliability of the source is questionable at best.
这来源的可靠性充其量是可疑的。
His motives for helping are highly questionable.
他帮助的动机非常值得怀疑。
The results of the experiment were questionable and inconclusive.
实验结果不确定且可疑。
The company's financial practices are questionable and lack transparency.
该公司的财务操作不透明且可疑。
Her explanation for the incident was questionable and vague.
她对事件的解释模糊且可疑。
The legality of the transaction is questionable under current laws.
根据现行法律，该交易的合法性值得怀疑。
The politician's promises are questionable given his past actions.
考虑到他的过往行为，这位政治家的承诺值得怀疑。
The effectiveness of the new policy is questionable at this point.
目前新政策的有效性值得怀疑。
The authenticity of the painting is questionable according to experts.
根据专家的意见，这幅画的真实性值得怀疑。
The safety of the new drug remains questionable after recent tests.
经过最近的测试，新药的安全性仍然值得怀疑。
questionable decision 可疑的决定
questionable behavior 可疑的行为
questionable ethics 可疑的道德
questionable source 可疑的来源
questionable judgment 可疑的判断
questionable character 可疑的人品
questionable legality 可疑的合法性
副词: questionably;
