官方ORM API开发文档：https://www.odoo.com/documentation/10.0/reference/orm.html
Recordsets（记录集）
New in version 8.0: This page documents the New API added in Odoo 8.0 which should be the primary development API going forward. It also provides information about porting from or bridging with the "old API" of versions 7 and earlier, but does not explicitly document that API. See the old documentation for that.
V8.0中的新增功能：此页面记录了Odoo 8.0中添加的新API，它应该是未来的主要开发API。它还提供了有关从版本7和更早版本的“旧API”移植或桥接的信息，但未明确说明该API。请参阅旧文档。
Interaction with models and records is performed through recordsets, a sorted set of records of the same model.