There was a little drop of water.

这儿有一滴小水珠。

youdao

youdao

Another drop of water fell with a soft plop.

又一滴水轻轻滴答一声落下。

《柯林斯英汉双解大词典》

I had forgotten to add more oil to the drop of water to stop it from drying.

VOA: special.2009.07.25

My hands shook as I put a drop of water on a piece of glass.

VOA: special.2009.07.25

Suddenly,I realized I had not looked at the drop of water for several days.

VOA: special.2009.07.25

You either drink it neat or with a drop of water to open the flavours.

BBC: Why you should never drink whisky on the rocks

However, MySpace remains just a drop of water in the ocean for News Corp.

FORBES: News Corp. 20% Undervalued Even Though Myspace Goes From Gem To Junk

"There wasn't one drop of water in the basement" of the main home, she said.

WSJ: The House of The Year