chasm
n
1 deep opening in the ground; abyss; gorge (地上的)深坑; 深渊; 峡谷.
2 (fig 比喻) wide difference of feelings or interests between people, groups, etc (人、 团体等的情感或利益的)巨大差距, 分歧
the vast chasm separating rich and poor 贫富的鸿沟.
For example, you might pick up a travel book and read a few pages before going to sleep. It is enough to dip into it and read bits here and there. In a word, this is tasting.