If the symbol were Coptic, the first symbol would be "ra" and then an unknown symbol followed by a double "S" sound.

所以如果这个符号是埃及古语，第一个符号应该是“ra”，然后是一个未知的符号，后面跟着一个双“S”音。

youdao

After all, if the risk profile of any application being deployed is unknown, then the entire security profile of the enterprise is essentially compromised.

毕竟，如果配置的任何一个应用程序的风险都是未知的，那么也必然会威胁到整个企业的风险程度。

youdao

The unknown concentration can then be calculated from the amount of known reagent used.

然后未知溶液的浓度就可以通过被消耗掉的已知溶液的体积计算出来。

youdao

Then on April thirtieth, two thousand seven,a huge fire of unknown cause almost completely destroyed South Hall.

VOA: special.2009.08.21

I could take an unknown gas and put it in and measure it and then say, wow, those are the lines that are characteristic of sodium.

我取一种未知气体，把它放到管里,然后检测它，哇，这些线是钠的特征。

麻省理工公开课 - 固态化学导论课程节选

In April,1994 unknown assassins shot down the plane carrying then-President Juvenal Habyarimana.

VOA: standard.2009.04.10

Although he has since been identified as 60-year-old Larry Bailey, his identity was then unknown.

MSN: 'He started tearing up. I started tearing up.'

With Marvell, he admits he got lucky by accepting a cold call from Weili Dai and Sehat Sutardja, who were then unknown.

FORBES: Fab-ulous Filipino

In 2009, The Rockefeller Foundation gave a grant to Social Finance UK to develop a then unknown innovative finance tool called the social impact bond.

FORBES: Social Innovation in Acceleration: Building the Social Impact Bond Ecosystem