The detailed mechanisms involved for those changes are still under investigation.
这些变化的确切机制仍有待于进一步探讨。
Another 15 army deaths were still under investigation when the figures were released in February.
今年2月公布这一数字时，还有15起士兵身亡死因正在调查。
Tracy: It's still under investigation. But an autopsy Tuesday found no evidence of trauma on her body.
还在调查。但是周二进行的验尸结果显示她的身体并没有外伤的痕迹。
The cause was still under investigation with the truck also damaging an adjoining wine store and nail salon.
该卡车还撞毁了一家售酒商店和一家美甲沙龙。事故原因还在调查中。
She says the reasons for the crash are still under investigation. But, the cause was probably due to bad weather.
她说，事故原因还在调查之中，不过可能是恶劣的天气造成了飞机失事。
Air France is now moving quickly to put in newer versions of the speed sensors. But the cause of the crash is still under investigation.
法航现在正迅速行动安装新型速度传感器。但是此次坠机事故的原因尚在调查之中。
Although many studies have shown the potential beneficial effects of stem cell therapies in treatment for heart failure, delivery methods are still under investigation.
虽然有许多实验显示干细胞治疗心衰具有潜在的治疗作用，但是给药途径尚处研究之中。
The Huajin official said contract workers had been excavating the mine before it would start producing coal in October, and that the cause of the accident was still under investigation.
华晋焦煤的管理人员说，当时这些合同工正在挖掘矿道，以便在今年10月份开始产煤；事故原因仍在调查中。他说，救援人员仍在寻找生命迹象。
The source of exposure for the initial case is still under investigation, with exposure to infected poultry or an environment contaminated by their faeces considered the most plausible source.
该最初病例的接触源仍在调查之中，接触受感染的家禽或受其粪便污染的环境被认为似乎是最合理的接触源。
Police say 5 paintings including masterpiece by Picasso have been stolen from Paris museum. The police spoke on condition of anonymity because the investigation is still under way.
警察称共有5幅画在巴黎博物馆被盗，其中包括毕加索的作品。该名警官不愿透露姓名，因为调查还在进行中。
Bahir refused to comment on the prosecutor general's statements, saying only that the investigation was still under way.
巴希尔拒绝评论检察总长的声明，只是说调查仍在进行之中。
Bahir refused to comment on the prosecutor general's statements, saying only that the investigation was still under way.
巴希尔拒绝评论检察总长的声明，只是说调查仍在进行之中。
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