Mobile phone use among children has become a problem.

孩子们使用手机已经成为一个问题。

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Mobile phone used among school kids has become a problem for the school years, so one of the rules in our country says that school kids are not allowed to bring mobile phones to school.

小学生在学校使用手机已经成为一个问题，因此我国有一项规定是，小学生不能把手机带到学校。

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Financing schools has become a problem about equal to having an elephant in the living room. It's so big you just can't ignore it.

筹集学费已经像房间里的大象一样，成了一个不容忽视的问题。

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He says many don't even have the active ingredients in them. There is a tendency to treat all fevers as malaria in West Africa,and resistance to otherwise effective treatments, like cloroquine, has become a problem.

VOA: standard.2009.04.25

Okay, it could be a bit of a problem if this text has become the basis for a system of religious faith or belief, and your assumptions about it are that its telling a truth that is singular in nature.

如果这本书成为一些宗教信念系统的基本,那就有问题了,你会臆断，这本书上的都是真确的，都是非凡的。

耶鲁公开课 - 旧约导论课程节选

As I said at the beginning, in the philosophical literature, this has become known as the problem of dirty hands so named after a famous play written by the French philosopher Jean-Paul Sartre.

正如我一开始所说的，在哲学作品中,这已经作为脏手问题而闻名,自从法国哲学家萨特写下,一部非常有名的戏剧之后。

耶鲁公开课 - 政治哲学导论课程节选

The operation will focus on the south of the county, where deer poaching has become a problem.

BBC: Operation targets wildlife crime in Cumbria

This has become a problem for big asset-management companies, who are losing their brightest minds to the hedge fund industry.

FORBES: Growing Pains

Oil has become a problem for indigenous communities such as the U'Wa, who live in the eastern provinces of Arauca, Casanare, Santander, Norte de Santander and Boyaca.

BBC: Colombia's indigenous peoples face uncertain future