Guatemalans who immigrated to the US in the 1990s, were able to increase their incomes sixfold.

20世纪90年代移居到美国危地马拉人增加了六倍。

Fourfold patterns fit in a square grid, and sixfold patterns in a hexagonal grid.

四重图案适合方形网， 六重图案和六边形网配。

The number of “energy co-operatives” has risen sixfold since 2007, to 586 last year.

去年 “能源合作项目”数目为586个，是2007年六倍。

Gregory Barker, an energy minister, says the solar industry could expand sixfold within a decade.

能源部戈里? 巴克尔说，在未来十年内太阳能行业将扩展六倍。

The study estimates that humans have decreased the biomass of wild mammals sixfold and plants twofold through actions such as hunting and deforestation.

这项研究估计，捕猎和砍伐树木等人类行为，使野生哺乳动物生物量减少了6倍，植物减少了2倍。