Ruby之类没有规范的语言给试图移植它的人带来麻烦，尤其当需要完成一个净室实现的时候。
Languages without specifications such as Ruby are posing a particular problem for people trying to port them, especially when a clean-room implementation is desired.
至少以EMF模型的形式对 OMG的ReqIF标准创建一种净室实现，还包括能够编辑这些模型的一些基本工具。
to have at least one clean-room implementation of the OMG ReqIF standard in form of an EMF model and some rudimentary tooling to edit these models.
升空以前，在意大利都灵阿莱尼亚航天公司（Alenia Spazio）一间洁净室组装的“圆顶”观测舱，它的七扇窗户被彩色的带子遮蔽了起来。
Multicolored tape enshrouds the Cupola's seven window panes in a clean room at Alenia Spazio in Turin, Italy, before launch.
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