它与对单字节数据类型使用LENGTH函数类似。

It is similar to the LENGTH function when used against a single-byte data type.

youdao

如果使用双字节数据类型作为输入，它就会给出双倍的length函数值。

It gives double the LENGTH function value if double-byte data type is used as input.

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这个字节数组包含INTEGER数据类型结构的所有字节。

This byte array will hold all the bytes of the INTEGER data type structure.

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So might have been seen long and that might be correct on some servers, but very, very often the data type called "long" is actually 4 bytes.

你们有可能看到过long，那个在一些服务器上是正确的,但是非常，非常普遍的是，那个叫做“long“的数据类型,只占有4个字节。

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