This function always a returns a value, although it could be the value unknown.
该函数始终返回一个值，但是该值可能是unknown。
This snip is not from any known gene, and its function is unknown.
然而这种标记不是来源于已知基因，它的功能不为人知。
Body, with the function of tension, and can absorb unknown pressure.
体，具有承受张力的功能，并可吸收未知的压力。
It also has a quick word look-up function, for referencing unknown words.
它还具有快速单词的查找功能，用于引用未知的话。
The function of the thymus was unknown until relatively recently.
直到不久以前，人们对胸腺的功能尚不明了。
Their function and meaning are completely unknown.
它们的功能和意义是完全陌生的。
The unknown function F can be easily identified like the identification of Lagrange multipliers.
而待定函数F的识别类似于拉氏乘子的识别。
The penalty function method is applied for finding the unknown boundary.
采用罚函数法处理待定边界问题。
The penalty function method is applied for finding the unknown boundary.
采用罚函数法处理待定边界问题。
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