3. Sucrose was replaced with maltitol and aspartame, and sugar-free glazed waxberry is developed with the method of vacuuming penetration. 以麦芽糖醇和阿斯巴甜代替蔗糖,并且采用真空渗透法研制无糖蜜饯杨梅。
4. I am vacuuming the carpet now. 我正在用真空吸尘器清扫地毯。
5. You are still vacuuming the floor now. 你现在还在用真空吸尘器清扫地上。