She had been picking flowers and had put them in her hair and her clothes，but now she came slowly through the trees，to the other side of the little river.Very slowly—because she saw the priest.

翻译：她一直在采花，把花插在头发上和衣服上，她慢慢地穿过树林向小河的另一边走来。她走得很慢——因为看到了牧师。

请问Very slowly改为Very slow——because……可以吗？

【答】为什么要改呢？前面已经有了came slowly，改为slow反而不对称了。

此外，slow虽然可以用作副词，但并非能跟所有的动词搭配，只跟少数动词搭配，可以说go slow，但很少见come slow。