如果字段是值类型的，则对该字段执行逐位复制。

If the field is a value type, a bit-by-bit copy of the field is performed.

youdao

如果字段是值类型的，则对该字段执行逐位复制。

If the field is a value type, a bit-by-bit copy of the field is performed.

youdao