On top of this are the various proprietary systems that combine to form OS X.

在这之上，则是各种不同的专有系统，组合在一起构成了Mac OS X。

youdao

Then the plan is for WPS 6.1 to be built on WAS 6.1 with this feature pack, but still be backwards compatible with WPS 6.0.x and its earlier, more proprietary implementations of SCA and SDO.

接下来的计划是为了使WPS 6.1能在WAS 6.1上使用这个特性包进行构建，而且依旧向后兼容WPS 6.0.x及其更早版本，为更多的SCA和SDO专有实现提供兼容。

youdao

Then the plan is for WPS 6.1 to be built on WAS 6.1 with this feature pack, but still be backwards compatible with WPS 6.0.x and its earlier, more proprietary implementations of SCA and SDO.

接下来的计划是为了使WPS 6.1能在WAS 6.1上使用这个特性包进行构建，而且依旧向后兼容WPS 6.0.x及其更早版本，为更多的SCA和SDO专有实现提供兼容。

youdao