This type of PC first saw the light of day in 1981.

【see】这款个人计算机是在 1981 年问世的。

For one, there could be some kind of carbon-containing sediment deep within the Earth's mantle, that never saw the light of day.

一是，地幔深处有某些从未面世的含碳沉积物。

And it's important to note, though, that the White House has floated other executive orders that never saw the light of day.

不过，需要注意的是，白宫提及过的行政令也有从未成形过的。

For every story that saw the light of day, countless others remained shrouded in darkness, victims wary of retaliation or being ostracized.

每一个故事曝光后，无数其他故事仍然笼罩在黑暗之中，受害者担心遭到报复或被排斥。