The empirical evidence, such as it is, suggests an altogether different function for yawning—namely, that yawning prepares us for a change in activity level.
很多实验证据证实了打哈欠的另一个不同的功能，它能让我们做好准备，改变活动状态。
Our food, such as it is, is plentiful.
我们吃的，虽不很好，却很丰富。
Kazakhstan's opposition, such as it is, denounced the initiative.
哈萨克斯坦的反对派(如果要说还有的话)反对这一提议。
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