复数：placebos 复数：placeboes
1.安慰物,安慰剂;宽心话
2.晚祷悼声[丧歌]
1.a substance that is not medicine but that a patient who is taking it believes is medicine, and so they get better; a substance that is not a medicine, used as a standard of comparison in testing the effectiveness of a new medicine
placeboes