例句與造句

1. Take a spoonful of the solvent and former dry cleaning agent carbon tetrachloride, add an ounce of sodium metal and a pinch of nickel-cobalt catalyst, and cook in an oven at 700 degrees Celsius for two days . The result is a lot of table salt ( sodium chloride ) and a 2 percent yield of diamond, Li and colleagues report in Science.
2. It's difficult to find dry cleaning agent in a sentence. 用dry cleaning agent造句挺難的