In fact, the main reason is the deep recession, which slashed tax revenues and led to hundreds of billions of dollars in recession-fighting spending by both Bush and Obama.
事实上，深度衰退才是主要原因，一方面导致税收减少，另一方面导致布什和奥巴马投入数千亿美元用于救市。
2
But -modern primates are divided into two main groups: the lemurs and bush babies on one hand, and the monkeys and apes on the other.
不过，现代灵长目分为两个主要的分支：狐猴和丛猴同属一个分支，猿猴和无尾猿则属于另外一个分支。
3
This paper discussed the main cause that DF4 type diesel locomotive axle suspension bush fault happend and it put forward some advice on improvement.