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来源：雅诚德英语网
The places like lobby, corridor etc. where it is often stepped on, should be vacuumed 2 or 3 times a week, bedroom vacuumed once a week.
大厅、走廊和走动频繁的地方，每周应吸尘两至三次，卧室应至少每周吸尘一次。
The places like lobby, corridor etc. where it is often stepped on, should be vacuumed 2 or 3 times a week, bedroom vacuumed once a week.
大厅、走廊和走动频繁的地方，每周应吸尘两至三次，卧室应至少每周吸尘一次。