Researchers in this field have made some important new discoveries.
这个领域的研究人员有了一些重大的`新发现。
Teachers are up against some major problems these days.
老师们最近面临着一些重大问题。
Digital television has been around for some time now.
数字电视已经面市一段时间了。
A solution is still some way off.
解决办法尚需时日。
Everyone experiences these problems at some time in their lives.
每个人在人生的某个阶段都会经历这些问题。
