VOA慢速英语:Young Workers Lead Growing Labor Unrest in China

independent of不依赖…,独立于…

例句：He is independent of his parents.
      他不依赖父母生活。

2.For years, millions of Chinese from inland provinces have flooded into eastern industrial centers.

flood into越来越多的人涌入，这是比较形象的用法，像洪水一样涌入，flood在这里是动词用法。

3.They complained of long hours and low pay. Foxconn makes Apple iPhones and iPads and electronics for other companies.

complain of埋怨,控诉,对…不满

例句：He complained of being underpaid.
      他抱怨工资太低。

      She complained to me of his rudeness.
      她向我抱怨了他的粗鲁。

4.So when foreign companies start negotiating with local Chinese suppliers, they really press hard on the prices offered by those Chinese suppliers.

press on使(某人)负重

例句：The responsibilities pressed heavily on him.
      责任沉重地压在他的身上。

      The new taxes pressed heavily on the people.
      新税使人民不胜负荷。

5.What remains unclear is how far this can go before the government reacts to it as a threat.

What主语从句

在句中作主语的名词性从句称为主语从句， 主语从句所对应的谓语动词通常用第三人称单数的形式。为了整个句子的平衡， 主语从句经常后置， 并用it充当形式主语(此时， that引导的主语从句若不放在句首， 可以省略引导词that)。例如： What she did is not yet known. 她干了什么尚不清楚。// Whoever comes is welcome. 不论谁来都欢迎。// It is a pity (that) we haven’t contacted for ages. 很遗憾， 我们几年没联系了。// It has not been decided where the meeting is to be held. 在哪里开会还没决定。// It doesn’t matter whether she will come or not. 她是否来这无关紧要。