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in the wake of 尾随,紧跟,仿效
例句：Outbreaks of disease occurred in the wake of the drought.
那场旱灾过后疾病丛生。
2.It comes ten days ahead of the country's presidential runoff, which the Taliban has vowed to disrupt.
ahead of领先于…,在…之前,超过…,提前…
例句：She was always well ahead of the rest of the class.
她在班上总是遥遥领先。
3.And after a couple of truck drivers actually ran into each other, and the highway patrol decided to block that road for about a mile.
a couple of 一对,一双,两三个
例句：There's a couple of girls waiting for you outside.
有两个女孩在外面等你。