Additionally, only a few those activities in daily life may cause damage to the environment, and as long as people can change those behavior, there will be less pollution and the quality of current generation’s life will hardly decrease.

In addition, those actions/acts in daily life that may cause damage to the environment are so little that the change of them will hardly reduce the quality of life.

▲ 在修饰一整个句子的时候，书面表达的习惯通常是 in addition，而不是 additionally。用介词短语替代副词，类似的有 in general而不是generally。

▲ 原句中的 only a few 是表意重点，但是这个重点在原句中不够凸显，所以句型换作 so … that … 来凸显， so little that blah blah blah 可以凸显出little这个程度以及little带来的结果。

▲ 原句是两个分句的简单复合，修改后依托 so … that … 句型，让句子更紧凑。

▲ 同时，原句中的一些赘述被抛弃。