1.account for 占据
Computers account for 5% of the country's commercial electricity consumption.
电脑占据了这个国家商业用电的5%。

2.on a par with 与...同等
The share of exports in Japan's GDP is much smaller than in Germany or China and until recently was on a par with that in America.
日本的出口占GDP的份额比德国和中国的比重要小很多，并且直到最近，它的份额才和美国相等。

3.tipping point 临界点
They are about to pass their tipping point.
他们马上就要超过临界点了。