步行马拉松与马拉松类似，但人们以步行代替跑步。
A walk-a-thon is similar to a marathon, but people walk instead of running.
它被归为红豆杉科，而红豆杉现在被归为松类针叶树。
It is classified in the family Taxaceae, which is now classified as a conifer in the order Pinales.
这将使布什在明年陷入同尼克松类似的困境中。
This may find Bush in a parallel predicament unto Nixon in the year ahead.
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