This pioneering project used a "shotgun" approach, which first isolates a DNA strand and forces it to copy itself millions of times over in a chemical reaction.
这一前沿工程使用了一种“猎枪”方法。首先分离出一个DNA链，之后通过化学反应使它复制自身上百万次。
2
This copying is quite different from the way cells copy strands of DNA or humans copy memes.
这种复制与细胞DNA链的复制或者人类对媒母的复制大不相同。
3
Each messenger is an edited copy of one strand of the DNA double helix.