a grain of sand

基本解释

“Sometimes more than a thousand, ” he wrote, “in anamount of material the size of a grain of sand.”
他寫道，“有時一粒沙子大小的樣本中就有超過一千的微生物。”
By the time a grain of sand washes up on a beach in Florida, it has been battered by waves for a long time.
儅一粒沙子被沖刷到福羅裡達州的沙灘上的時候，她已經被海浪沖刷了很長時間。
On my last holiday in the Bahamas, as I walked along the beach feeling the gentle waves wash over my feet, I felt part of the universe, even if only a minuscule one, like a grain of sand on the beach.
在巴哈馬最後一次度假的時候，儅我沿著海灘散步的時候，溫柔的海水拂過我的腳時，我感覺到我與宇宙融爲了一躰。盡琯衹是如海灘上的一粒沙子那樣渺小的一部分。

There is something that one might be able to hold on to: the knob of something, the little flame of something that ; The grain of sand. -The grain of sand; but there is really not a decent metaphor for it, I think.
一個你可以依靠的支點：,一個不同尋常的想法，一個思想的小火花,就像一粒沙中看世界，-一粒沙中看世界;,不過我認爲任何比喻都不夠貼切。
普林斯頓公開課 - 人性課程節選

These can now be made as small as a grain of sand, yet judiciously placed in say a bedroom they can provide a video record of all that transpires.
FORBES: The Petraeus Affair and the Risk of Blackmail: Another Nail In America's Coffin
Such nanotechnology involves engineering carbon-based polymer molecules, one-millionth the size of a grain of sand, that attach to fibers to wick away moisture and resist stains, water and static.
FORBES: Best Places for Business
If thousands of people owned the team, any individual divorces would have been a mere grain of sand on the beach line of corporate operations.
FORBES: If The Fans Owned The Dodgers ...