1·We have encountered major problems.
我们遇上了大问题。
—— 《牛津词典》
2·We don't anticipate any major problems.
我们预料不会发生什么大问题。
—— 《牛津词典》
3·Teachers are up against some major problems these days.
老师们最近面临着一些重大问题。
—— 《牛津词典》
4·The report highlights the major problems facing society today.
报告特别强调了当今社会所面临的主要问题。
—— 《牛津词典》
5·He failed to foresee major problems.
他没能预见到主要问题。
6·Many other major problems subsequently emerged.
随后出现了许多其他重大问题。
7·California has two major problems: earthquakes and forest fires.
加州有两个主要问题：地震和森林火灾。
8·The birds don't mean to cause harm, but the chemicals they carry can cause major problems.
这些鸟本意并不想造成伤害，但其携带的化学物质会引发重大问题。
9·This is my report: One of the major problems in the Biramichi river is that the level of oxygen in the water is too low.
这是我的报告：比拉密契河的主要问题之一是水中的氧气含量太低。
10·The major problems of the travel and tourism industry that have hidden, or obscured, its economic impact are the diversity and fragmentation of the industry itself.
旅游业本身的多样性和碎片化是其隐藏或掩盖其经济影响的主要问题。