文字稿:

To some, they may not seem very appetising.

But these bugs could be part of the solution in the fight against world hunger.

That's according to the United Nations, which says two billion people already supplement their diets with edible insects.

The UN says industrial-scale insect farming could ensure future global food security.

Vocabulary 词汇:

appetising 美味可口的

bugs 昆虫

supplement 增补，补充

edible 可食用的

industrial-scale 大规模的