The team has not yet identified the rejuvenating factor, but they have found a blood-borne compound that seems to promote brain aging.
他们还没有确定重新变年轻的因素，但是他们发现了一种血液中的化合物似乎会促进大脑衰老。
We say "known" steps because, of course, it is possible that other weaknesses exist that have not yet been identified.
这里说“已知的”步骤当然是因为可能有其他漏洞还没有被发现。
Many such mutations have not yet been identified, and even when a known mutation is found in a tumour, drugs to block its effects may be unavailable.
许多类似的变异还没有得到认证。即便在肿瘤中发现已知的变异，停止变异的药物也是没有。
Other suspected foci have been identified in the Greater Mekong subregion, but are not yet confirmed.
在大湄公河次区域发现了其它疑似疫源地，但尚未确认。
The researchers who first identified them, led by Jill Banfield, have found other enigmatic features such as mysterious tubular structures whose function is not yet known.
最早识别出这种古生菌的研究者吉尔·班菲尔德(JillBanfield)还发现了其他神秘的特征，比如神秘的管状结构，这种结构的功能目前还不清楚。
This would mean that there are an additional 300, 000 children in Britain with autism spectrum disorder but who have not yet been identified.
这就意味着英国还有30万尚未获得诊断的孤独症儿童。
To date, the accuracy and reliability of these methods have not been compared in healthy subjects, and the single neck movement that best reflects overall range has not yet been identified.
目前为止，在健康受试者没有比较这些技术可靠性和精确性，以及单一颈部活动没有确认能反映整个活动。
The Bisu people of Lancang have been identified as the Lahu people in 1990. However, the Bisu people of Menghai have not been identified its ethnic genera yet.
澜沧等地的毕苏人经过识别，已于1990年归入拉祜族，勐海的毕苏人则尚未确定族属。
The Bisu people of Lancang have been identified as the Lahu people in 1990. However, the Bisu people of Menghai have not been identified its ethnic genera yet.
澜沧等地的毕苏人经过识别，已于1990年归入拉祜族，勐海的毕苏人则尚未确定族属。
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