Op_import: Converts sample database files from the foreignformat (abi) to native format.
op _ import：将采样数据库文件从外部格式(abi)转换为本地格式。
2
In fact, it's limited to MyISAM tables - a table format that doesn't support foreign keys and, thus, may be of limited use.
实际上，它仅限于myisam表——不支持外键的一种表格式，因此使用有限。
3
Teaching college English in big classes is the main format of foreign language teaching commonly adopted in colleges and universities in our country at present.