Unable to establish database connection with database.

无法建立该数据库的数据库连接。

youdao

Unable to establish database connection with database.

数据库向导无法建立数据库内容。

youdao

But until now researchers have been unable to establish whether it had happened and, if so, how.

但是直到今天，研究人员还不能确定是否发生了这样的事，也不知道果真如此的话，它是如何传递的。

youdao

But the examination was unable to establish whether measles was the main cause of his death.

BBC: Gareth Williams

"We are unable to establish any basis whatsoever for the 16.5% figure, " an outside performance review concluded.

FORBES: Financial Watchdog

An inquest at the time was unable to establish how she had come to have Midazolam in her body.

BBC: Nurse 'killed colleague after drugging her'