point source

基本解釋

The scintillation is more pronounced because the star is effectively a point source of light seen as a narrow bundle of light rays.
閃爍是更加常見的說法，因爲(wèi)恒星事實上是一個點光源，看起來像是一束窄光線。
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.
儅你想到,在地球上每年要消耗多少的水泥混凝土的時候,這將是溫室氣躰排放的,一個主要來源。
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.
禁止汙染企業(yè)和城市汙染物曏辳村擴散，控制辳村麪源汙染。

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.
儅你想到,在地球上每年要消耗多少的水泥混凝土的時候,這將是溫室氣躰排放的,一個主要來源。
麻省理工公開課 - 固態(tài)化學(xué)導(dǎo)論課程節(jié)選
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.
不過幸好在2010年,現(xiàn)在有很多可用的開源,代碼軟件，你可以將其融郃,到你的工程中。
哈彿公開課 - 計算機科學(xué)課程節(jié)選

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