Two is the weight of a carbon blackproducts there is a certain weight particularly light may be made by charcoal which did not reach the adsorption effect.
二是重量，一个炭雕产品是有一定重量的，特别轻的可能是由一般木炭制成，这就达不到吸附作用了。
2
Sending products for recycling leaves them vulnerable to being stolen and sold on the black market.
将产品送去回收又容易导致它们被盗并在黑市上出售。
3
Yellow refers to the smutty type, and grey or black to spam messages, many of which offer products or services of various shades of legality.