The fair allocation of network losses is one of hard problems in the market environment.

在市场环境下，网损如何公平地分摊是一个难题。

youdao

Decomposition and optimization of global query is one of hard problems in heterogeneous database integration.

全局查询的分解与优化是异构数据库的集成中许多难题之一。

youdao

Someone even did two of Kelly's hard math problems one night when she left her homework out on the table.

一天晚上，凯利把作业留在了桌上，竟然有人帮她解决了两道数学难题。

youdao

One of the problems for the EU in making hard choices is that there is nearly always somebody with an election coming up.

CNN: European leaders

Given such misinformation, China will need to work hard to catch up with one of the world's biggest medical problems.

ECONOMIST: A ��state secret�� is revealed