无人可知 meaning in Chinese

is anybody’s guess

Is that many of these people will have no formal qualification to show their family , friends and employers what they can do , whether they are fluent or just able to hold a short conversation in another language . " he said ocr had devised a new language scheme called asset languages to encourage people of all ages to learn languages in bite - sized amounts and get a qualification in them
“最滑稽的是，很多人都无法拿出正式的资格证明来向他们的家人朋友和用人单位证明自己的外语水平，他们到底是能够非常流利的运用一门外语还是只能用外语进行简单的对话无人可知。 ”