VOA常速英语:Spray Detects Hard-to-Find Tumors

短语讲解：

1. The spray is clear, but contains a non-toxic dye that almost immediately glows bright green when it reacts with enzymes produced by cancerous tumors.

react with与…起化学反应
例句：The water was reacting with the ferrous iron in the tank.
水与水箱中的铁质产生化学反应。

2. The problem with many cancers, according to Kobayashi, is that their early-stage tumors are too small to be seen with the naked eye.

according to据...所载;据...所说
例句：According to her, grandfather called at noon.
据她说,祖父在中午打来电话。

3. “The tiny, tiny cancer is very hard to see and then very hard to handle," says Kobayashi, "and very hard to see whether it’s removed from the body or not.”

remove from从…中移开〔拿走, 除掉〕
例句：She removed mud from her shoes.
她擦去了鞋上的泥。