When it was over, more than 4, 000 people had been killed by the thick black smog.

当烟雾消散时，有4,000多个市民死于这片浓黑的烟雾。

youdao

The basic retail code is nothing more than a transcription, using thick and thin black bars, of the number that appears on the bottom of the code: the first six numbers for the manufacturer, the next six for the product.

FORBES: Scanned Goods