Since most camera flashes emit IR along with their burst of visible light, the one substitution allowed the prototype to transmit and record infrared light.
由于大多数相机闪光灯在发出可见光同时就会发射出红外线，这一替换使得原型机能够发送并记录红外线。
The Rails gem is quite a thin and simple component that orchestrates behind the scenes the seamless integration of all other components; two of the most visible being Active Record and Action View.
Rails gem是一个相当简单的组件，它在幕后无缝地集成所有其他组件；最明显的两个组件是Active Record和Action View。
Wholesale record prices are highly visible—a few prices in company catalogues account for the bulk of sales—which suggests that firms could plausibly co-ordinate on an agreed tariff.
产片的批发价格是高度透明的，公司目录上少少的价格就说明了大部分的销售状况，这也表明唱片公司很有可能在制定价格表上达成一致。
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