She recommends not only proper ventilation, including opening your windows at home, but also regular vacuum cleaning and air purification.

她不仅建议适当通风，包括打开家里的窗户，还建议定期吸尘和空气净化。

Grant, climbing the stairs with weary feet, appreciated the carpet even while his other self wondered about the vacuum cleaning.

格兰特用疲惫的双脚爬上楼梯， 欣赏着地毯， 尽管他的另一个自我对真空吸尘器感到疑惑。