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》

A drop fell on the apple tree.

一滴雨落在苹果树上。

youdao

Retail sales fell again in March, the fourth drop in the past six months, leaving them 1.6% lower than a year earlier.

三月份的零售业销售量再度下降，这已是过去6个月以来的第四次下降，使得它们相对于1年前降低了1.6%。

youdao

But Chinese exports fell almost 3% in December from a year earlier - the sharpest drop in at least 10 years.

VOA: special.2009.01.16

A circular blood drop could mean the blood fell directly downward.

VOA: special.2010.05.05

European stocks were weaker Thursday and the Euro currency fell following a reported drop in German retail sales and rise in German unemployment.

FORBES: A.M. Kitco Metals Roundup: Gold Weaker on Technical Correction, Chart Consolidation

For the first time since 1982, overall world energy demand fell. (The drop in natural gas use set a record.) In China, however, consumption is way up.

FORBES: Reading China's Mixed Signals

Nine of the drop-offs fell off the list permanently.

FORBES