But some luxury goods also serve a practical function.
当然，有的奢侈品也有实用功能。
This is a C language function of the mouse, simple and practical.
这是个用C语言编写的鼠标的函数，简单实用。
This product has great practical function and performance, it is a safeguard to driving safety.
该产品具有极大的实际应用性能，是行车安全的一大保障。
This product has great practical function and performance, it is a safeguard to driving safety.
该产品具有极大的实际应用性能，是行车安全的一大保障。
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