同义词： combat ceiling
以上来源于: WordNet
N the height above sea level, measured under standard conditions, at which the rate of climb of an aircraft has fallen to a specified amount 实用升限 → compare absolute ceiling
Thanks to this new pricing scheme, developers can now use App Engine to deploy larger and more popular applications on the service without hitting the ceiling of Google's free quotas.
现在有了这个新的定价方案，开发者可以通过App Engine部署大型、更受欢迎的程序，而不用担心突破Google免费配额的上限。
Steel beams and mechanical service pipes are visible across the ceiling, from which hang industrial-looking pendant lights made by a local fabricator.
通过天花板，可以看到钢梁和机械的给水管。天花板上悬挂了本地制造商生产的非常工业化的吊灯。
And personalized service area of higher light requirements, in addition to ceiling lights can be used with non-red light, such as violet or blue light, but also a multi-light cycle.
而个性服务区的灯要求要更高一些，除了天花板上的灯带可以采用非红光，如紫光或蓝光灯外，还可以采用多色光循环。
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