However, despite 2 billion people worldwide already supplementing their diet with insects, consumer disgust remains a large barrier in many western countries.
2019年12月六级真题(第二套)听力 Section B
柯林斯高阶英汉双解学习词典释义
VERB
增补;补充
If you supplement something, you add something to it in order to improve it.
A supplement is an extra amount of money that you pay in order to obtain special facilities or services, for example when you are travelling or staying at a hotel.