point source

基本解释

The scintillation is more pronounced because the star is effectively a point source of light seen as a narrow bundle of light rays.
闪烁是更加常见的说法，因为恒星事实上是一个点光源，看起来像是一束窄光线。
And so, when you think about how much cement concrete are consumed annually on the planet, this becomes a considerable point source of greenhouse gas emissions.
当你想到,在地球上每年要消耗多少的水泥混凝土的时候,这将是温室气体排放的,一个主要来源。
We will prohibit the relocation of urban polluting enterprises and dispersal of urban polluting materials in the countryside, and control non-point source pollution in rural areas.
禁止污染企业和城市污染物向农村扩散，控制农村面源污染。

And so, when you think about how much cement concrete are consumed annually on the planet, this becomes a considerable point source of greenhouse gas emissions.
当你想到,在地球上每年要消耗多少的水泥混凝土的时候,这将是温室气体排放的,一个主要来源。
麻省理工公开课 - 固态化学导论课程节选
But thankfully now in 2010, we're at the point where there's a whole lot of free and open source software that you can integrate into your projects that other nice people have made available.
不过幸好在2010年,现在有很多可用的开源,代码软件，你可以将其融合,到你的工程中。
哈佛公开课 - 计算机科学课程节选

Point Source Power, a project out of Lawrence Berkeley National Labs, has created a dung-powered fuel cell for emerging markets.
FORBES: Why Are Portable Fuel Cells Such A Flop?
In addition to providing a focal point for open source software developers, consumers will benefit by the formation of Linaro.
ENGADGET: ARM, Samsung, IBM, Freescale, TI and more join to form Linaro, speed rollout of Linux-based devices

a source of light or other radiation that can be considered to have negligible dimensions