a drop in the bucket 杯水車薪

a drop in the bucket
繁：杯水車薪
简：杯水車薪

何仲平估計，一年會有三十名海外專科醫生來港，雖然是杯水車薪，但相信始終有助紓緩本港前線人手短缺的問題。

形容方案杯水車薪 海外醫生免實習醫學會失望（2019年5月10日）。頭條日報，取自http://hd.stheadline.com/news/daily/hk/762605/

“Honestly, the number is just a drop in the bucket… but at least they will come,” Ho said on a radio programme. “Even if they leave for the private sector after three years, at least there are three years for us to catch our breath.”

Only 30 extra overseas doctors expected in Hong Kong each year, despite Medical Council relaxing rules. (2019, May 10). Hong Kong Free Press. Retrieved from https://www.hongkongfp.com/2019/05/10/30-extra-overseas-doctors-expected-hong-kong-year-despite-medical-council-relaxing-rules/