timeout= 是引导提示在自动引导默认 OS（本例中是 Linux）之前的等待时间（以十分之一秒为单位）。
timeout= is the number of tenths of a second that the boot prompt will wait before automatically loading the default OS, in this case Linux.
而每一位魂师当修为提升到以十级为单位的瓶颈时，都必须要猎杀一只与自己属性相合的魂兽，获取魂环而产生突破。
And every soul when fix in order to promote to the bottleneck to the ten level for the unit, must hunt one down and their attributes of consistency, obtaining soul Ring and breakthrough.
公制是基于以米为长度单位，克为重量单位，公升为容积单位的测量系统，它们都是十进位。
The metric system is the measuring system based on the meter for length, the gram for weight and the liter for capacity, which counts by tens.
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