# CA、MC、DEX、CEX、抗MEV是什么意思？

## CA

合约地址（Contract Address）是特定于每个代币的唯一标识符，其实就是一串随机字符串，可能长这个样子：

每条链上的B的ca都长得不一样，具体情况要注意。

## MC

即市值Market Cap的缩写。

## DEX、CEX

CEX，中心化交易所，Centralized Exchange DEX，去中心化交易所，Decentralized Exchange

## 抗MEV

就是防夹子。

夹子机器人之前科普过了。买入土狗时，sol/eth兑换成某个土狗b，会有一个价差，会有机器人夹子会夹你赚取中间的利润。

防夹子就是防止中间商赚差价。


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