检测高或低水平条件，单个或多个控制开关可以激活外部的视听觉警报器。

Monitor high and low liquid level conditions. Single or multiple control switch(es) activate an exterior audiovisual alarm.

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这将有助于更精确地估算在大气中某个确定二氧化碳水平条件下，世界预期变暖的程度。

That would narrow estimates of how much warming the world can expect for a given level of CO2 in the atmosphere.

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由于资本成本高低不同，权益筹资和债务筹资必须符合不同的边际资本产出水平条件。

Because of different costs of capital, equity financing and debt financing must satisfy their own required levels of marginal capital output.

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The barriers to unity presented by European geography and very limited technology made it hard for a would-be conqueror to create a vast empire, eliminating competitors and imposing his will over vast areas.

由于欧洲独特的地理条件,和当时有限的科技水平,使未来的征伐者很难建立一个广袤的帝国,清除异己和使他的意志,传播到广袤领地的每一个角落

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