1) is 2.5 times greater than Force N2
(考点:倍数 + 形容词/副词比较级 + than)
2) reacts three times as fast as the other one
(考点:倍数 + as + 形容词/副词 + as)
3) is 49 times the size of the moon
(考点:倍数 + 名词)
4) wants to raise the rent by a third
(考点:动词 + by + 数词/百分比/倍数)
5) plan to double their investment
(考点:double + 名词)