Relief agencies say the immediate problem is not a lack of food, but transportation.

救援机构称当务之急不是食品匮乏，而是交通运输不足。

《柯林斯英汉双解大词典》

Transportation was becoming less of a problem for those who wished to move west and for those who had farm surpluses to send to market.

对于那些想要搬到西部去的人和有多余农产品要送到市场去的人来说，交通已经不是什么问题了。

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Steam also promised to eliminate a transportation problem not fully solved by either canal boats or turnpikes.

蒸汽动力还在试图解决一个运河及高速公路无法完全解决的运输问题。

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The good news is that so-called green transportation is a solution to a problem that is more contrived than real given the global oil boom and the emergence of natural gas, not electric motors, as the major alternative to gasoline and diesel.

FORBES: After Billions Of Taxpayer Dollars, Green Transportation Is A Bust