Up through now; so far
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Neutral
迄今为止研究还没有任何定论 | Qìjīnwéizhǐ yánjiū hái méiyǒu rènhé dìnglùn
So far, the research has been inconclusive
[Source]
据悉,袁隆平院士迄今为止已获11个国际大奖 | Jùxī, Yuán Lóngpíng yuànshì qìjīn wéizhǐ yǐ huò 11 gè guójì dàjiǎng
It's reported that the academic Yuan Longping has already won eleven international awards so far
[Source]
None
None
This is an HSK chengyu
Uncertain -- Either my resources all attributed this chengyu to different people or this information has been lost to history
This chengyu comes from an unknown work of literature or poetry