2. Cause protection from external languages
2.1. The advancement of science
2.1.1 of material goods, which has a shape and features. But over time, advances in technology that have made the change to the shape and properties. If the thing that still use the old names such. It is considered to have changed the meaning of words already occurred, such as a pen in English derives from the Latin "pet that fly relative to the pen in the first period, used the feather cut cores that are keen to dip water. Ink Writing But advances in science make the pen a new model that makes the pen does not involve any more feathers. The original meaning of the word pen to change.
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