The phrase "also know that once" is not correct in standard written English.
It seems to be an incomplete thought and lacks clarity without additional context.
Example: "You should also know that once you submit your application, it will be reviewed within two weeks."
Alternatives: "also be aware that when" or "also understand that after".
I also know that once she's ensconced in the US, I'll still be seeing her in the British media with predictable regularity.
DealBook » Some Students Still Dream of Wall Street | "It's a tougher business and there's a lot more scrutiny, but we also know that once you get accepted into the ranks of the banking elite, you can do any job you want afterward," said Kyle Carnes, a junior at Tufts University, according to the FINS Web site.
They also know that once inside a system, information can be shared immediately, globally and irretrievably.
Know when to cross the line on being dependent but also know that once in a while you're going to need to accept help and that is not a sign of weakness...that's what friends & family are for, right?
This is like bizarre world, so that's when I reached out, because I also knew that once I did, I couldn't stop.
Iran also knows that once lifted, the sanctions cannot be reinstated.
He also knows that once you arrive on that soundstage, this is only shot you're going to get at what you're doing, so he works till he drops.
"We knew we faced steep odds, but we also knew that once Judge Alito becomes Justice Alito, there's no turning back the Senate confirmation vote". The filibuster effort split the Senate's 44 Democrats, 19 of whom voted to end debate.
Secondly, the child also knows that once the topic has been mastered, he or she will get full credit for his hard work.
I also know that often, those people remove themselves once it's clear that accountability and productivity aren't just fads.
They also know that aggressive detective work by federal investigators has clipped the pipeline that once carried millions in private donations collected in the United States.
