台湾籍旅美老师今天交给我们的句子是：

If you were to just put color in here right now, it would kind of come out looking like cherry cough syrup because blood is a little opaque. It's not completely see-through.
如果你现在就直接加染料的话，它的成品会变成有点像樱桃口味的咳嗽糖浆，因为血是有点不透光的，它不是完全透明的。

学习重点：

1.syrup 浓糖水；糖浆
syrup (n.) 浓糖水；糖浆

2.opaque 不透明的；不透光的
opaque (adj.) 不透明的；不透光的

3.see-through 薄得透明的
see-through (adj.) 薄得透明的