on the up and up
1 steadily improving. informal
2 honest or sincere. informal, chiefly North American
❷ 2018 Brad ParksCloser than You Know Once the judge sees that the confidential informant isn't on the up and up, he'll have no choice but to toss the warrant.
英语词组固定搭配大全包含15956条英汉双解词组，基本涵盖了全部常用英文词组、短语的翻译及用法，是英语学习的有利工具。