problem作名詞時(shí)是可數(shù)的，復(fù)數(shù)形式是problems

problem

美 /?prɑ?bl?m/

英 /?pr?bl?m/

n.

難題；引起麻煩的人

adj.

成問題的；難處理的

雙語例句:

The government has worked out a series of measures to solve the problem of rural children's education.

***制定了一系列措施來解決農(nóng)村小孩的教育問題。

I was stumped by the last math problem in the exam.

考試中我被最后一道數(shù)學(xué)題難住了。