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一、倍数增减的表示法

1) Force N1 _______________(比力N2大2.5倍).

2) This substance _______________(反应速度是另外那种物质的三倍).

3) The earth _______________(是月球大小的49倍).

4) The landlord _______________(想将租金提高三分之一).

5) They _______________(计划将投资增加一倍).

1) is 2.5 times greater than Force N2

2) reacts three times as fast as the other one

3) is 49 times the size of the moon

4) wants to raise the rent by a third

5) plan to double their investment