在撒哈拉沙漠，和其它大多数食草动物不同，长颈鹿在干旱季节不迁徙(离开它的家)，因为它可以从吃的叶子中获得充足的水分。
Unlike most of the other grass-eaters in the Sahara, the giraffe doesn't migrate (leave its homeland) during dry seasons because it gets enough water from the leaves it eats.
在大多数这样的系统中，更新以一种“懒”方式传播到副本集内的其它节点上。
In most of these systems the updates are propagated in a lazy manner to the remaining nodes in the replica's set.
天文学家说大多数星系只在某个特定的时刻才会与其它星系发生碰撞。
Astronomers say most galaxies collide with another at some point in their lifetimes.
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