事实上，2007年，当他和他的交通运输研究团队在调查人们为何抵制大巴交通时，他们却发现大巴交通运输已经开始回暖了。

In fact, in 2007, when he and his team of transportation researchers began studying why travelers shunned buses, they found themselves in the midst of a turnaround.

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在交通运输情况调查中，经常采用抽样调查的方法。

In communications and transportation circumstances survey, the method of sampling survey was used regularly.

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