Unix: cating a file out to itself - why does this blank the file?

猫一个文件本身为什么这个空白文件吗？

The two cating months catered to the customer's consuming mentality of pursuing green.

以上两个美食月迎和了食客追求绿色，返朴归真的消费心理。

The frequency band and space band of the optimum cating parameters are studied further for practical use.

本章还进一步研究了最佳涂层的频带带宽和空间带宽，探讨了最佳涂层的实用性。

Since Gongzui Hydropower Station put into operation, the tail water level always threaten the flood control safety against pow er-house (in di cating powerhouse on the ground).

龚嘴水电站自运行以来，尾水位的抬高一直威胁着厂房(指地面厂房)的消防安全。

As a key com-ponent of vessels simulation - training system, it offers a piece of method which using software to imitate classical hardware, and indi-cating to be really feasible.

作为舰艇航行操作仿真训练系统课题的关键组成部分，它提供了一个用软件模拟传统硬件的方法，结果表明是确实可行的。