国产热热热精品,亚洲视频久久】日韩,三级婷婷在线久久,99人妻精品视频,精品九热人人肉肉在线,AV东京热一区二区,91po在线视频观看,久久激情宗合,青青草黄色手机视频

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 詞匯:

appetising 美味可口的

bugs 昆蟲

supplement 增補，補充

edible 可食用的

industrial-scale 大規(guī)模的