Not everyone is sure that such additives can help meet the latest climate change targets.

并不是所有人都确信这样的添加剂能帮助达到最新的气候变化目标。

Geneticists are now using these proteins to make their own targeted changes to DNA.

遗传学家正在使用这些蛋白质进行DNA的改变。

With gene editing, targeted changes are made like deletions and insertions right in an organism's genome.

通过基因编辑，可以在生物的基因组上做出删除、插入等特定的改变。

Geneticists are now using these proteins to make their own targeted changes to DNA. Scientists have been messing with genomes for years.

遗传学家现在正利用这些蛋白质对DNA进行针对性改造。科学家们多年来一直在试图捣毁基因组。