不要在鸡蛋孵化前，就开始数小鸡。
数小时前我离开了录音室。
抵达集市前还需要数小时的艰苦跋涉。
我的祖父在镜子前要花上数小时来修理胡须。
My grandfather would spend hours in front of the mirror trimming his beard.
最初，枚举数定位在字符串中第一个文本元素前。
Initially, the enumerator is positioned before the first text element in the string.
他数星期来，有好几次在眩晕前，意识突然发生变化。
He had several sudden alterations in consciousness preceded by dizziness for several weeks.
康普茶是一种古老民族药物，起源于数世纪前远东。
Kombucha is an old folk remedy which originated centuries ago somewhere in the far east.
康普茶是一种古老民族药物，起源于数世纪前远东。
Kombucha is an old folk remedy which originated centuries ago somewhere in the far east.
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