...may not be stressed that ;it must not be emphasized that ;it must not be stressed that 人们不知道it be not known that ;it can not be known that ;it may not be known that ;it must not be known that ;it should not be known that ;it will not...
The President has let itbeknownthat he does not intend to run for election again.
总统已经公开表示他不打算再次参加竞选。
《牛津词典》
2
How 7r causes this is not yet known. It may stem from behavioural differences or it may bethat different versions of DRD4 have different effects on the way the body processes food.