unascertainable

基本解釋

The date of origin of this name is unascertainable.
這個(gè)名稱(chēng)起於何時(shí)，已經(jīng)無(wú)從稽考了。
The cause of dinosaur extinction is still unascertainable today.
現(xiàn)在恐龍滅絕的原因仍無(wú)法確定。
It consists of speculations on matters as to which definite kownledge has, so far, been unascertainable.
但它思考的問(wèn)題卻是神學(xué)式的,是不確切的知識(shí),是至今爲(wèi)止還沒(méi)有找到答案的。
Lastly, fuzzy monitoring index and random monitoring index of displacement are presented for the unascertainable boundary conditions and mechanics parameters.
針對(duì)邊界條件、力學(xué)蓡數(shù)等的不確定性,研究了模糊監(jiān)控指標(biāo)和隨機(jī)監(jiān)控指標(biāo)的應(yīng)用。