Take ten drops every four hours.

每隔四小时喝十滴。

《新英汉大辞典》

Ten-dollar gifts may seem like drops in the ocean.

ECONOMIST: America and malaria

When there are lots of nucleation centres around, the small drops end up even smaller than usual (ten thousandths of a millimetre, or microns, across, instead of 50 microns).

ECONOMIST: Weather and pollution

Indiana's loss drops them into a three-way tie for first in the Big Ten with Michigan and Michigan State.

NPR: Illini Buzzer-Beater Upsets No. 1 Hoosiers, 74-72