- Between now and 2050, the urban population of Africa could triple.
2017年12月四級真題（第三套）閱讀 Section C
- The team at Stanford investigated the aquifers below this depth, and found that reserves may be triple what was previously thought.
2018年12月四級真題（第一套）閱讀 Section C
- BrightLine iTV, which designs and sells interactive ads, says interest has surged: it expects its revenues almost to triple this year.
出自-2016年6月閱讀原文
- BrightLine itV, which designs and sells interactive ads, says interest has surged: it expects its revenues almost to triple this year.
2016年6月六級真題（第三套）閱讀 Section C