在过去的几年里,中国两个不确定因素已经清除干净。
In the past few years, two uncertainties about China have cleared themselves up.
这里有两个不确定因素-,也就是时间和距离的不确定性。
So there are two uncertainties involved — the distance and the timing uncertainty.
就是在简单的insert语句中,两个值被转义,以解决任何含义不确定的字符,比如说可能会扰乱sql语法的单引号。
It's a simple INSERT statement where the two values are escaped to account for any errant characters such as single quotes that might disturb the SQL syntax.
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