Forests come under increasing pressure as the population increases as so many people use firewood for cooking.
Japan is in the lead, producing twice as many industrial robots as the rest of the world combined
Could you explain as...as in these sentences ?
The first sentence is incorrect. The second as should be and.
The second sentence is correct. As...as shows equality: s many as, as far as, as much fun as, as small as - all are comparisons that show equality.
She is as tall as her father means both people are the same height.
Miami is as far from here as Moscow means both cities are the same distance from here.
Your example is a simple math problem. Twice as many...as means the first item, Japan is the same times two. If the rest of the world makes a thousand robots each month, Japan makes two thousand each month.