目前还不清楚

• It is unclear whether the two attacks - - which happened several hours and about 100 km apart - - are linked
  两次枪击事件的地点相距约百公里，先后隔数小时。目前还不清楚它们之间是否有联系。
• The reasons for the findings were unclear , said one of the report ' s authors , professor tim spector from at king ' s
  研究报告撰写者之一伦敦国王学院的蒂姆斯派克特教授说，至于其中的原因，目前还不清楚。
• It is not yet clear whether the prc will permit such visits to proceed unobstructed , as was the case from september 1999 until may 2001
  目前还不清楚中国是否会像1999年9月到2001年5月期间那样准许这类访问顺利进行。
• It ' s unclear how tai chi , an ancient chinese martial art that has become increasingly popular in the west , affects the immune system
  目前还不清楚太极，这一来自中国但在西方日趋普及的古老武术,是如何影响免疫系统的。
• But he does not know whether it is due to discrimination against the overweight and obese or to that may limit their productivity
  但至于这究竟是因为人们歧视肥胖，还是因为肥胖所引起的健康问题和心情郁闷导致工作效率低下，目前还不清楚。
• It is not clear when or if thailand plans to unblock the site . offending the monarch is a crime in thailand punishable by up to 15 years in prison
  目前还不清楚泰国何时或是否会解除对网站的封锁。在泰国，侮辱国王是一种罪行，最多可判刑15年。
• The measure was adopted by the state administration of radio , film and television and the ministry of information . it was not immediately clear how the policy will be implemented
  这一措施由中国国家广电总局和信息产业部制订。目前还不清楚这一政策将如何落实。
• But he does not know whether it is due to discrimination against the overweight and obese or to health problems or depression that may limit their productivity
  但至于这究竟是因为人们歧视肥胖，还是因为肥胖所引起的健康问题和心情郁闷导致工作效率低下，目前还不清楚。