a ray of light

基本解释

When a ray of light encounters a boundary, such as that between air and water, its speed changes; so does its angle of travel.
儅一束光線遇到一個界麪，如空氣與水之間的界麪，光的速度就會發生改變，光的運動角度也就同樣發生改變。
Add a bit of tweaking here and fine tuning there and its warm, radiant glow shines like a ray of light amidst ‘Contra’’s incessant glow.
這裡脩脩、那裡調調，成爲這張溫煖照人的‘Contra’中又一束耀眼的光線。
The fact that educated expatriates like the Moore sisters think of these youngsters in Liberia is a ray of light in this struggle, he adds.
他又說，像摩爾這樣受過教育的海外僑胞能夠關注這片土地上的這些小家夥們，這是這場戰鬭中的一抹陽光。

Finally,a single ray of light shot from out and fell full upon the vulture eye.
And what's interesting about this sun is it has a ray of light coming out of the top.
這幅畫的有趣之処在於紅日的光線從畫麪的頂耑射了出來。
It's like 課堂 - SpeakingMax英語口語達人
And then,when my head was well in the room, I undid the lantern just so much that a single thin ray of light fell upon the vulture eye.

A. Points can always find a ray of light in the darkest clouds.
NPR: Points Wins The Houston Open