The source of infection is still unknown, but is under active investigation.

病毒来源仍不明，正在积极调查中。

youdao

The mechanism by which Resveratrol exerts such a range of beneficial effects across species and diseases model is interesting and now under active investigation.

白藜芦醇对许多物种和疾病发挥的有益功效引起人们兴趣，现在正处于积极研究中。

youdao

To see which are active, RNA from cells under investigation is labelled with fluorescent dyes and is then poured over the array.

要观察那些被激活，就将那些经过荧光染色的RNA倒到微数组上。

youdao

Several Muslim groups that Alamoudi has either founded or led are now under active investigation by counterterrorism agents.

CENTERFORSECURITYPOLICY: hamas

Ms. MONTRICE GODARD YAKIMOV (Office of Thrift Supervision): I can't comment on the specifics of this complaint because it's under active investigation.

NPR: Woman: Countrywide Proposed Fibbing to Get Loan

But this is under active investigation and we await the results of that investigation by the FBI before we can reach any firm conclusions about what precipitated the attacks.

WHITEHOUSE: Press Briefing