短语讲解：
1. Dr. Peter Mazzone led the study using breath analysis as a tool to diagnose lung cancer.
use as把…当作…使用
例句：Corn is used as animal feed.
玉米被用作牲口饲料。
2. We were a little more accurate if we looked for a very specific type of lung cancer rather than lung cancer in general.
look for寻找
例句：She is looking for her lost child.
她正在寻找失去的孩子。
rather than而不是
例句：They thus increased their annual grain production rather than diminished it.
他们这样增加了而不是减少了粮食年产量。
3. For example, the study shows aggressive cancers have a different breath bio-signature than cancers which are not so fast-moving.
for example例如, 譬如
例句：There are many sources of air pollution; exhaust fumes, for example.
空气污染有许多来源, 例如废气。
