how can i insert manay records during a transaction?

[jinkaz]

for example,there are two models ,as creating ,when inserting action happen there maybe one of models insert a few records.
but i found ExecCtx method did't support bulk inserts.sqlx.NewBulkInserter that i think what is difficult to be compatible to ExecCtx .
maybe i's missed something userful .but rightnow i need some tips and help.thank u