unknown option
未知选项
以上为机器翻译结果，长、整句建议使用 人工翻译 。
And OPTARG will contain the unknown option.
而OPTARG将包含该未知选项。
youdao
The better that real prices correlate with the unknown option price, the more confidently you can take on any level of risk.
实际价格与未知的期权价格联系得越好，参与者便越有信心去承担任何水平的风险。
That allows RSA to give banks and other clients the option of excluding questions based on data that has been retrieved recently by some unknown person.
FORBES: How I Failed My Bank Security Test--And A Thief Might Pass
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