英语语法分析

Elevator manufacturers are hoping to preinstall the doors, completely eliminating any chance that a worker might fall.

电梯制造商希望预先安装电梯门，以此完全消除工人摔落的可能性。

Preinstall option available on some systems.

在一些系统中可以使用预安装选项。

The teaching in fact is the preinstall and the production harmonious entity.

教学实际上就是预设和生成的和谐统一体。