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1、IP地址（Internet Protocol Address）是互联网上用于识别设备的数字地址。

2. IP addresses define how devices on a network are addressed and communicate in packets.

3、IP地址通常分为两种类型：IPv4和IPv6。

: Correct posture can effectively reduce energy consumption. When running, keep an upright position, with your shoulders relaxed, your arms swinging naturally with a moderate amplitude, and your legs alternating and forcefully stepping on the ground. The cadence should be fast and steady, with a moderate stride length, not too large or too small. Take Xiao Wang as an example, he used to run in an incorrect posture, always hunched over, not only could not improve his speed, but also was very easy to get tired. Later, after correcting the correct posture, I was much more relaxed in the 500-meter relay and my performance improved a lot.